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Journal articles on the topic 'Dioscorea alata L'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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1

Makiyah, Sri Nabawiyati Nurul, and Muhammad Sasmito Djati. "Potency of Purple Yam (Dioscorea alata L) as an Immunomodulatory Agent." Berkala Kedokteran 14, no. 1 (February 24, 2018): 89. http://dx.doi.org/10.20527/jbk.v14i1.4589.

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Abstract: Purple yam tuber (Dioscorea alata L.) is one of tubers that has not been used optimally. One of the nutrients contained in Dioscorea species is Saponin Steroid. This paper aims to examine the potential of Steroid Saponin in purple yam tuber (Dioscorea alata L.) as an immunomodulatory agent. The method is by reviewing from various literatures. This article found that Steroid Saponin in purple yam tuber (Dioscorea alata L.) had a potency as an immunomodulatory agent. Keywords: Purple yam tuber (Dioscorea alata L), Steroid Saponin, Immunomodulatory

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2

Ihwan, Ihwan, Rahmatia Rahmatia, and Khildah Khaerati. "TERATOGENIK EKSTRAK ETANOL UWI BANGGAI UNGU (Dioscorea alata L.) PADA MENCIT BETINA (Mus musculus)." Jurnal Ilmiah Ibnu Sina (JIIS) Ilmu Farmasi dan Kesehatan 5, no. 2 (October 27, 2020): 309–18. http://dx.doi.org/10.36387/jiis.v5i2.511.

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Teratogenic is an abnormal development on embryo and is the cause of congenital defect or birth defect. This study aims to determine the effect of the addition of Dioscorea alata L. ethanol extracts to the embryo development on pregnant mice whose given orally to 24 mice which divided to 4 treatment groups, they are the normal group (NG) with NaCMC 0.5%; 28 mg/KgBB treatment group; 35 mg/KgBB; 42 mg/Kg BB. The addition of Dioscorea alata L ethanol extracts was done on the sixth day until the 15th day of pregnancy. On the 18th day of pregnancy, Laparaktomi was done to the pregnant mice and the embryo was taken out of the uterus. The observation was done to the fetus numbers, weight weighing of the fetus's body, dan length measurement of the fetus's body. Another observation is the observation of the external organ defect of the embryo. The study results that the addition of Dioscorea alata L ethanol extracts with various doses have no significant effect (P>0.5) to the mice external fetus development. On the examination of the fetus, we can conclude that Dioscorea alata L ethanol extracts don’t give any effect that may cause the defect of the fetus’ external organ.

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3

Abdulrahaman, A. A., F. O. Egbedo, and F. A. Oladele. "Stomatal complex types, stomatal density, and the stomatal index in some species of dioscorea." Archives of Biological Sciences 61, no. 4 (2009): 847–51. http://dx.doi.org/10.2298/abs0904847a.

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Dioscorea alata L. has three stomatal complex types, namely, paracytic, anisocytic, and tetracytic stomata, with percentage frequency values of 50, 18, and 32, respectively. Dioscorea bulbifera has paracytic and anisocytic stomata, with percentage frequency values of 87.60 and 12.40, respectively. Dioscorea cayenensis has anisocytic stomata, with a percent?age frequency value of 100. Dioscorea dumetorum has tetracytic and paractytic stomata, with percentage frequency values of 91.05 and 8.95, respectively. Both D. esculenta and D. rotundata have paracytic stomata, with a percentage frequency of 100. The range of variation of stomatal density is from 10 (lowest value) in D. alata and D. dumentorum to 27 (highest value) in D. bulbifera. The stomatal index also varies, from 24 in D. alata to 47 in D. cayenensis. The size of stomata in all species is small, varying in length from 0.74 ?m in D. alata to 1.79 ?m in D. dumentorum. An indented dichotomous key based on stomatal features was constructed to distinguish and identify the species.

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4

Adeniji, Adegboyega, Apovughaye Taiga, and M. S. Ayodele. "Comparative Studies on the Susceptibility of Three Tubers of Dioscorea Species to Dry Rot in Anyigba, Kogi State." International Annals of Science 8, no. 1 (October 5, 2019): 70–74. http://dx.doi.org/10.21467/ias.8.1.70-74.

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Various yam species are cultivated but white yam (Dioscorea rotundata Poir.), water yam (Dioscorea alata L.) and yellow yam (Dioscorea cayenensis Lam.) are among the most cultivated in Nigeria. The Susceptibility of three tubers of Dioscorea species (D. rotundata, D. alata and D. cayenensis) to dry rot pathogens was investigated. Isolation was made from rotted tuber tissues, followed by pathogenicity test and identification of isolates; two fungal species Aspergillus niger and Rhizopus stolonifer were isolated and identified as the major fungi causing yam tuber dry rot in the study area. There was significant difference (P<0.05) in the susceptibility of the various Dioscorea tuber species studied to rot caused by Aspergillus niger [D. rotundata (20mm), D. alata (11mm) and D. cayenensis (3.5mm)] and Rhizopus stolonifer [ D. rotundata (17.5mm), D. alata (10mm) and D. cayenensis (2mm)]. The phytochemical contents of the three tubers of Dioscorea species examined also varied significantly, with the bioactive substances of D. cayenensis and D. alata relatively higher when compared to D. rotundata. Therefore, this research reveals that three metabolites; Saponin, Flavonoid and Tanin constitute the major trait for resistant ability of D. cayanesis and D. alata to dry rot causing pathogen. Therefore, it is necessary that the differences in susceptibility be considered when developing yam barns. Also, researchers should work on genetically improving the susceptible white yam (D. rotundata) which is commonly eaten by millions of Nigerians with a possibility of increasing the quantities of the deficient phytochemicals.

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5

Supriya, Das, Dutta Choudhury Manabendra, and Behari Mazumdar Pranab. "Micropropagation of Dioscorea alata L. through nodal segments." African Journal of Biotechnology 12, no. 47 (November 18, 2013): 6611–17. http://dx.doi.org/10.5897/ajb2013.12191.

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6

Techen, Natascha, Iffat Parveen, and Ikhlas A. Khan. "A single molecular marker to distinguish between species of Dioscorea." Genome 60, no. 3 (March 2017): 201–7. http://dx.doi.org/10.1139/gen-2015-0105.

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Yams are species of the genus Dioscorea (family Dioscoreaceae), which consists of approximately 630 species. The majority of the world production of yams occurs in Africa with 58.8 million t annually, but they are also produced in the Americas and Asia. The saponins in yams have been reported to possess various properties to improve health. The tuber and aerial parts of various species often share morphological similarities, which can cause problems in the proper identification of sample material. For example, the rootstocks and aerial parts of Dioscorea villosa L. share similarities with Dioscorea polystachia Turcz. Dioscorea bulbifera L. may be mistaken for Dioscorea alata L. owing to similar morphologies. Various molecular analyses have been published to help with the identification of species and varieties within the genus Dioscorea. The multi-loci or single-locus analysis has resulted in varying success, some with only a limited discrimination rate. In the present study, a single nuclear genomic region, biparentally inherited, was analyzed for its usefulness as a molecular marker for species identification and discrimination between D. bulbifera, D. villosa, D. nipponica, D. alata, D. caucasica, and D. deltoidea samples. The results of this study show that the LFY genomic region can be useful as a molecular marker to distinguish between samples.

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7

Makiyah, Sri Nabawiyati Nurul, Moch Sasmito Djati, Muhaimin Rifa’i, and Widodo ,. "LYMPHOCYTE PROLIFERATION ON HYPERSENSITIVITY OF Balb/C MICE AFTER GIVEN ETHANOL EXTRACT TUBER OF Dioscorea alata L." KnE Life Sciences 2, no. 1 (September 20, 2015): 107. http://dx.doi.org/10.18502/kls.v2i1.125.

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<p>Purple yam (Dioscorea alata L.) is a source nutritious tubers that has not been used optimally. Nutrients content in Dioscorea species are starch, essentials amino acid, minerals, polyphenol, glycoprotein, purin derivates such as allantoin, and steroid saponin which have biological activity such as immunomodulatory and antiallergic. The purpose of this research was to assess the absolute number of lymphocyte on hypersensitivity of mice after treated with ethanol extract of D. alata. Twenty one male Balb/C mice were used which were divided into seven groups: control (C), negative control (NC), treatments with ethanol extract of D. alata 0.17 g/kg, 2.01 g/kg, 10.04 g/kg (T I – T III), treatment with antihistamine drug 0,4 mg/mice/day (T IV) and treatment with diosgenin 200 mg/kg (T V). For 17 consecutive days the T I - T III groups were treated with ethanol extract of D. alata correspond to their doses, T IV group were treated with antihistamine drugs, and T V group were treated with diosgenin. On day 15, NC and T I – T V groups of mice were induced by ovalbumin 0,0483 mg/mice. Mice were sacrificed on day 18, and the lymphocyte was isolated from spleen, and the absolute number of lymphocyte was counted with Haemocytometer. Results showed that the absolute number of lymphocyte on mice hypersensitivity after treated with ethanol extract of D. alata L. were the lowest, while the highest absolute number of lymphocyte was found in the group treated with antihistamine drugs followed by the group treated with diosgenin on 200 mg/kg BW, negative control group and control group, respectively. </p><p><strong>Keywords</strong>: Balb/C mice, Dioscorea alata, ovalbumin, hypersensitivity, lymphocyte</p>

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8

Hasan, Sayed M. Zain, Andrew A. Ngadin, Ramisah M. Shah, and Norizan Mohamad. "Morphological variability of greater yam (Dioscorea alata L.) in Malaysia." Plant Genetic Resources 6, no. 1 (April 2008): 52–61. http://dx.doi.org/10.1017/s1479262108920050.

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An assessment of morphological variation among 70 accessions of greater yam (Dioscorea alata L.) collected throughout Malaysia was made. Data of 47 morphological variables measured from the accessions were subjected to multivariate analysis using principal component (PCA) and cluster analysis (CA). The PCA results indicated that the characters contributing largely to the species variability were those related to the shape, size and flesh colour of underground tubers; shape and colour of aerial tubers; position, shape, size and vein colour of the leaves; petiole colour; shoot growth rate; and number of days for shoots to germinate. The two-dimensional plot of the first two PCs showed a separation between accessions of purple tuber groups and those of white tuber groups, but was unable to distinguish accessions according to tuber shape groups, i.e. irregular, oblong and round, as revealed by visual observation. The dendrogram of CA revealed four major groups of D. alata in Malaysia, which supported the PCA grouping. This study demonstrated that D. alata in Malaysia consists of numerous genotypes revealing wide inter- and intra-group variability.

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9

Egesi, C. N., R. Asiedu, G. Ude, S. Ogunyemi, and J. K. Egunjobi. "AFLP marker diversity in water yam (Dioscorea alata L.)." Plant Genetic Resources 4, no. 3 (December 2006): 181–87. http://dx.doi.org/10.1079/pgr2006121.

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AbstractAmplified fragment length polymorphism (AFLP) markers were employed to assess intraspecific variability in water yam (Dioscorea alata L.). Fifty-three accessions of diverse geographic origins in West and Central Africa (Benin, Côte d'Ivoire, Ghana, Nigeria and Chad) and Puerto Rico were analysed using three AFLP primer combinations. Of the 342 amplification products generated, a mean of 53.4% were polymorphic. Genetic similarity coefficients ranged from 0.29 to 0.95. The accessions could be clustered into three major genetic groups with one outlier. Each group was a mixture of accessions of different geographical origin indicating that geography has not played a major role in the differentiation of the species. A few accessions clustered very tightly suggesting that there may be duplicate accessions in the collection. The wide genetic variation observed constitutes a good basis for genetic improvement of yam.

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10

TANOUE, Hayao, and Hidetoshi SIMOZUNO. "Quality Changes of Dioscorea alata L. Tuber during Storage." NIPPON SHOKUHIN KOGYO GAKKAISHI 38, no. 11 (1991): 996–1001. http://dx.doi.org/10.3136/nskkk1962.38.996.

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11

Srivichai, Subin, and Parichat Hongsprabhas. "Profiling Anthocyanins in Thai Purple Yams (Dioscorea alata L.)." International Journal of Food Science 2020 (July 10, 2020): 1–10. http://dx.doi.org/10.1155/2020/1594291.

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Two accessions of Thai purple yam (Dioscorea alata) were investigated for their chemical constituents during tuber development when the vines were 3 to 8 months old. Yam tubers contained total phenolic compounds ranging between 100 and 385 mg gallic acid equivalent (GAE), flavonoids 60–160 mg catechin equivalent (CE), monomeric anthocyanin of 10–90 mg cyanidin-3-glucoside equivalent (CGE), 70 g starch, and 25–30 g amylose in 100 g yam tuber on a dried weight basis, depending on the accession and age of yam vine. LCMS-IT-TOF mass spectrometry revealed that anthocyanins in both accessions from 8-month-old vines had cyanidin or peonidin nucleus. Their glycosides were nonacylated, monoacylated, or diacylated with sinapic or ferulic acid. The major yam anthocyanins found in both accessions were alatanin C (cyanidin 3-(6-sinapoyl gentiobioside). This study revealed the insights on chemical components during tuber development and characteristics of alatanins for future selection and cultivation of purple yam tubers.

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12

Abraham, K., and P. Gopinathan Nair. "Floral biology and artificial pollination in Dioscorea alata L." Euphytica 48, no. 1 (June 1990): 45–51. http://dx.doi.org/10.1007/bf00028959.

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13

Hutami, Sri, Ragapadmi Purnamaningsih, Ika Mariska, and Surya Diantina. "Multiplikasi Tunas dan Induksi Perakaran pada Ubi Kelapa (Dioscorea alata L.) dan Gembili (Dioscorea esculenta L.) Secara In Vitro." Jurnal AgroBiogen 10, no. 2 (August 23, 2016): 53. http://dx.doi.org/10.21082/jbio.v10n2.2014.p53-60.

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<p>Dioscorea sp. (yam) is one of the minor tuber crops which<br />grows wildly in the forest and only a few of its species are<br />cultivated and used as main or secondary food.<br />Conservation is needed to preserve plant genetic material.<br />The objective of this research was to obtain methods of<br />plantlets propagation of D. alata L. and D. esculenta L.<br />through in vitro culture. The research was conducted at<br />Tissue Culture Laboratory of ICABIOGRAD in 2012. The<br />research consisted of three stages. First, shoot emergence.<br />In this experiment, young shoots were planted in MS basic<br />medium combined with benzyl adenine (BA) (0, 1, 3, and 5<br />mg/l) and gibberelic acid (GA) (0 and 5 mg/l). Second, shoot<br />multiplication. Shoots of Dioscorea which were planted in<br />the best medium of the first experiment were subcultured in<br />MS medium combined with thidiazuron (0, 0.1, 0.5, 1, 2, and<br />3 mg/l). Third, root initiation. Shoots of Dioscorea which<br />were planted in the best medium of the second experiment<br />were subcultured in MS medium (½ MS and 1 MS)<br />combined with indole-3-butyric acid (IBA) (0, 1, 3, and 5<br />mg/l). Result of these experiments showed that shoot<br />emergence of D. alata L. and D. esculenta L. began at 2<br />weeks after planting in MS medium. More plantlets of D.<br />alata L. and D. esculenta L. were obtained by shoot<br />multiplication in MS media. Root initiation of the Dioscorea<br />began at 4 weeks after planting in MS media. The addition of<br />IBA (3–5 mg/l) on D. esculenta L. could not stimulate rooting<br />but led to the formation of callus at the base of the stem<br />buds.</p>

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14

Li, Tao, Hui Teng, Fengping An, Qun Huang, Lei Chen, and Hongbo Song. "The beneficial effects of purple yam (Dioscorea alata L.) resistant starch on hyperlipidemia in high-fat-fed hamsters." Food & Function 10, no. 5 (2019): 2642–50. http://dx.doi.org/10.1039/c8fo02502a.

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In this study, we investigated the interventional effect of resistant starch (RS) obtained from purple yam (Dioscorea alata L.) on regulating lipid metabolism and gut microbiota in hyperlipidemic hamsters.

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15

Mondo, Jean M., Paterne A. Agre, Robert Asiedu, Malachy O. Akoroda, and Asrat Asfaw. "Genome-Wide Association Studies for Sex Determination and Cross-Compatibility in Water Yam (Dioscorea alata L.)." Plants 10, no. 7 (July 10, 2021): 1412. http://dx.doi.org/10.3390/plants10071412.

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Yam (Dioscorea spp.) species are predominantly dioecious, with male and female flowers borne on separate individuals. Cross-pollination is, therefore, essential for gene flow among and within yam species to achieve breeding objectives. Understanding genetic mechanisms underlying sex determination and cross-compatibility is crucial for planning a successful hybridization program. This study used the genome-wide association study (GWAS) approach for identifying genomic regions linked to sex and cross-compatibility in water yam (Dioscorea alata L.). We identified 54 markers linked to flower sex determination, among which 53 markers were on chromosome 6 and one on chromosome 11. Our result ascertained that D. alata is characterized by the male heterogametic sex determination system (XX/XY). The cross-compatibility indices, average crossability rate (ACR) and percentage high crossability (PHC), were controlled by loci on chromosomes 1, 6 and 17. Of the significant loci, SNPs located on chromosomes 1 and 17 were the most promising for ACR and PHC, respectively, and should be validated for use in D. alata hybridization activities to predict cross-compatibility success. A total of 61 putative gene/protein families with direct or indirect influence on plant reproduction were annotated in chromosomic regions controlling the target traits. This study provides valuable insights into the genetic control of D. alata sexual reproduction. It opens an avenue for developing genomic tools for predicting hybridization success in water yam breeding programs.

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Karasiova, A. N. "Physiological and biochemical evaluation of Dioscorea alata L. tubes cultivated on a modified ion-exchange substrate." Vegetable crops of Russia, no. 3 (June 28, 2021): 100–104. http://dx.doi.org/10.18619/2072-9146-2021-3-100-104.

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Relevance. Currently, there is an increased interest in medicinal plants and preparations from natural herbal raw materials. This is due to the fact that biologically active substances of plants are more easily included in vital processes and do not cause side effects in humans. They can be products of primary (vitamins, fats, carbohydrates, proteins) and secondary biosynthesis (alkaloids, glycosides, tannins). Plants always contain a complex of biologically active substances, but one or several have a therapeutic and prophylactic effect. They are classified as active ingredients and are used in the production of medicines. Some of the promising medicinal plants are species from the genus Dioscorea, for example, Dioscorea alata L., containing a complex of biologically active substances. The aim of this work is to study the effect of humidity and the level of mineral nutrition in the root environment on the accumulation of biologically active compounds in the tubers of the dioscorea winged plant, adapted to in vivo conditions on an ion-exchange substrate of various chemical composition and agrophysical properties.Results. It has been shown that Dioscorea alata L. plants are able to accumulate the greatest amount of starch, dry matter, ascorbic acid, and flavonoids in an ion-exchange substrate modified with 1 g/l of the coarse hydrogel fraction. The data obtained can be used for practical purposes.

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17

Sulastra, Corry Stephanie, Khildah KHILDAH KHAERATI Khaerati, and Ihwan. "TOKSISITAS AKUT DAN LETHAL DOSIS (LD50) EKSTRAK ETANOL UWI BANGGAI UNGU (Dioscorea alata L.) PADA TIKUS PUTIH (Rattus norvegicus)." Jurnal Ilmiah Medicamento 6, no. 1 (March 31, 2020): 10–14. http://dx.doi.org/10.36733/medicamento.v6i1.715.

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Penelitian ini merupakan penelitian eksperimental murni dengan tujuan untuk mengetahui gejala toksisitas akut dan lethal dose 50 ekstrak etanol uwi Banggai ungu (Dioscorea alata L.) terhadap tikus putih (Rattus norvegicus). Penelitian ini menggunakan 20 ekor tikus yang dibagi menjadi empat kelompok dan diberikan dosis bertingkat yaitu 1 g/kgBB, 2 g/kgBB, 4 g/kgBB, dan 8 g/kgBB ekstrak etanol uwi Banggai ungu dengan sekali pemberian secara oral kemudian diamati gejala ketoksikan dan jumlah kematian pada tiap hewan uji setelah 24 jam, selanjutnya dilakukan pengamatan bobot badan selama 14 hari tanpa diberikan perlakuan. Hasil penelitian menunjukkan LD50 ekstrak etanol uwi Banggai ungu (Dioscorea alata L.) adalah semu atau bukan LD50 yang sesungguhnya yaitu >8 g/kgBB dan masuk dalam kategori praktis tidak toksik (5-15 g/kgBB). Gejala klinis yang teramati pada tikus yaitu menurunnya aktivitas motorik pada dosis tertinggi dan frekuensi grooming yang meningkat seiring dengan peningkatan dosis.

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Payares, Iris, Javier Beltrán, and Euriel Millán. "Incidencia de virosis en ñame (dioscorea spp.) en cinco municipios del departamento de sucre, colombia." Temas Agrarios 19, no. 1 (August 19, 2016): 86–95. http://dx.doi.org/10.21897/rta.v19i1.727.

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En Colombia, el ñame (Dioscorea spp.) se cultiva en la región Caribe, siendo Dioscorea alata L. y Dioscorea rotundata Poir. las especies más cultivadas. Uno de los factores limitantes en estos cultivos son las enfermedades causadas por virus, principalmente por Potyvirus que ocasionan disminución en la producción de los tubérculos y pérdidas económicas significativas. El objetivo de este trabajo fue evaluar la incidencia de virosis en ñame en el departamento de Sucre. Se realizaron visitas a cultivos de Dioscorea alata y Dioscorea rotundata en cinco municipios del departamento y se midió la sintomatología foliar. Se tomaron muestras de hojas y se realizó diagnóstico para Potyvirus mediante la técnica ELISA-DAS indirecta. Además, se inocularon plantas indicadoras con extractos preparados a partir de plantas con síntomas virales y positivas para Potyvirus. Todos los cultivos visitados mostraron síntomas asociados a los Potyvirus del ñame, tales como bandeo, moteado, clorosis y deformación foliar. Los municipios con mayor incidencia sintomática fueron Sampués (82,5%), Sincelejo (79,5%) y San Juan de Betulia (71,6%). Se detectó Potyvirus en plantas sintomáticas y las plantas indicadoras desarrollaron síntomas similares a los encontrados en campo. Los cultivos de ñame del departamento de Sucre presentan alta incidencia de Potyvirus lo que sería causa de pérdidas económicas a los productores.

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Ahebe Marie Helene, Koffi, Soko Dago Faustin, Yah N Guettia Marie, Koffi Yao Odilon, Tonessia Dolou Charlotte, and Atta Taky Hortense Diallo. "EVALUATION DE LACTIVITE FONGIQUE DES EXTRAITS AQUEUX DOCIMUM GRATISSIMUM ET DE CHROMOLAENA ODORATA SUR COLLETOTRICHUM SP. RESPONSABLE DES POURRITURES DES TUBERCULES DE DIOSCOREA ALATA EN CONSERVATION A DALOA, COTE DIVOIRE." International Journal of Advanced Research 9, no. 07 (July 31, 2021): 209–18. http://dx.doi.org/10.21474/ijar01/13119.

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Ligname, Dioscorea spp. (L) est une importante denree alimentaire qui occupe une place primordiale dans le systeme agricole en Cote dIvoire. Cette plante est cependant sujette a plusieurs maladies au cours de sa culture et pendant sa conservation parmi lesquelles celles causees par divers champignons. Ainsi, les pertes occasionnees par les pourritures des tubercules en conservation, constituent un risque majeur pour la rentabilite economique et pour la securite alimentaire des consommateurs. Cette etude avait pour objectif dinitier une methohede lutte contre les pourritures des tubercules de Dioscorea alata en conservation.par lutilisation dextraits aqueux dOcimum gratissimum et de Chromolaena odorata. Pour ce faire, trois differentes doses (33 g/l 39 g/l et 50 g/l) dextraits aqueux de chacune de ces deux plantes ont ete appliquees sur des rondelles digname prealablement inoculees avec Colletotrichum sp. Les resultats ont montre que la souche fongique inocule aux rondelles de D. alata a cause dimportants degres de pourritures. Aussi, les extraits de Chomolaena odorata et dOcimum gratissimum possedent des activites antifongiques differentes. Ces activites ont ete plus elevee avec lextrait dOcimum gratissimum a 50 g/l que celui de Chomolaena odorata.

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Doloking, Haeria, Nur Syamsi Dhuha, and Pratiwi Ningsi. "Studi potensi ubi kelapa (Dioscorea alata. L) sebagai bahan penghancur tablet." Jurnal Ilmiah Farmasi 15, no. 1 (July 1, 2019): 1–11. http://dx.doi.org/10.20885/jif.vol15.iss1.art1.

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KOUAKOU, Amani Michel, Konan Evrard Brice DIBI, Boni N’ZUE, Brice Sidoine ESSIS, and Goli Pierre ZOHOURI. "Dichotomous key determining varietal groups of yam species Dioscorea alata L." Greener Journal of Agricultural Sciences 5, no. 5 (September 20, 2015): 190–203. http://dx.doi.org/10.15580/gjas.2015.5.082415121.

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22

Abraham, K., S. G. Nair, M. T. Sreekumari, and M. Unnikrishnan. "Seed set and seedling variation in greater yam (Dioscorea alata L.)." Euphytica 35, no. 2 (June 1986): 337–43. http://dx.doi.org/10.1007/bf00021841.

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23

Lebot, V., R. Malapa, T. Molisale, and J. L. Marchand. "Physico-chemical characterisation of yam (Dioscorea alata L.) tubers from Vanuatu." Genetic Resources and Crop Evolution 53, no. 6 (August 26, 2005): 1199–208. http://dx.doi.org/10.1007/s10722-005-2013-2.

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24

Obidiegwu, J., E. Rodriguez, E. Ene-Obong, J. Loureiro, C. Muoneke, C. Santos, M. Kolesnikova-Allen, and R. Asiedu. "Ploidy levels of Dioscorea alata L. germplasm determined by flow cytometry." Genetic Resources and Crop Evolution 57, no. 3 (September 8, 2009): 351–56. http://dx.doi.org/10.1007/s10722-009-9473-8.

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25

Egesi, Chiedozie N., Robert Asiedu, James K. Egunjobi, and Mpoko Bokanga. "Genetic diversity of organoleptic properties in water yam (Dioscorea alata L)." Journal of the Science of Food and Agriculture 83, no. 8 (2003): 858–65. http://dx.doi.org/10.1002/jsfa.1343.

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Oliveira, Aryane Ribeiro, Alline Emannuele Chaves Ribeiro, Ítalo Careli Gondim, Elaine Alves dos Santos, Érica Resende de Oliveira, Gabriela Silva Mendes Coutinho, Manoel Soares Soares Júnior, and Márcio Caliari. "Isolation and characterization of yam (Dioscorea alata L.) starch from Brazil." LWT 149 (September 2021): 111843. http://dx.doi.org/10.1016/j.lwt.2021.111843.

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Bunyani, Nur Aini, Maya Roman, and Jorita Naisanu. "Utilization of Forest Plants as Local Food Sources for the Oben Village Community, Nekamese District, Kupang Regency." Jurnal Biologi Tropis 20, no. 3 (October 14, 2020): 347. http://dx.doi.org/10.29303/jbt.v20i3.2001.

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Forest plants as a source of food as a substitute for carbohydrates have long been used by the village community. Forest plants directly address the food insecurity experienced by villagers. This research was conducted in Oben Village, Nekamese District, Kupang Regency on April 24 to July 22, 2018. The aim of this study was to describe the use of forest plant species as a local food source and their traditional processing by the Oben Village Community, Nekam District, Kupang Regency. These are the exploration, exploration and interview methods. The data obtained were analyzed descriptively. The results of this study were: Found 5 types of forest tubers that are commonly used by the people of Oben Village as a food source, namely Dioscorea alata L; Dioscorea esculenta L; Dioscorea hispida D; Dioscorea pentaphylla and Amorphophallus compulatus, The traditional way of processing forest tubers is that they can be washed immediately, then roasted, boiled or steamed, processed into local chips, compote and flour as cake ingredients.

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Alieu, Sartie, and Robert Asiedu. "Development of mapping populations for genetic analysis in yams (Dioscorea rotundata Poir. and Dioscorea alata L.)." African Journal of Biotechnology 10, no. 16 (April 11, 2011): 3040–50. http://dx.doi.org/10.5897/ajb10.1546.

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Wuryantoro, Wuryantoro. "Kajian Model Tanam pada Pertumbuhan dan Hasil Tanaman Uwi (Dioscorea alata L.)." JURNAL AGRI-TEK : Jurnal Penelitian Ilmu-Ilmu Eksakta 21, no. 1 (July 6, 2020): 35–41. http://dx.doi.org/10.33319/agtek.v21i1.65.

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Diversifikasi pangan dan energi merupakan suatu keniscayaan yang mutlak dilakukan mulai sekarang, memanfaatkan sumberdaya karbohidrat yang selama ini belum optimal termanfaatkan. Tanaman ubi-ubian dari keluarga Dioscorea merupakan tanaman potensial penghasil karbohidrat di Indonesia bahkan dunia. Tanaman ini juga potensial dikembangkan mengantisipasi perubahan kodisi iklim mengarah pada terbentuknya lahan kering dan lahan kritis baru. Tanaman ini sangat toleran ditanam di lahan kering yang sangat luas di Indonesia. Penelitian bertujuan untuk memperoleh teknis budidaya tanaman uwi berkaitan dengan sistem tanam menghasilkan produksi yang optimal. Percobaan menggunakan Rancangan Acak Kelompok (RAK) dengan 3 (tiga) blok sebagai ulangan. Tiga jenis uwi terdiri atas uwi putih bulat, uwi putih lonjong dan uwi kuning lonjong dan tiga sistim tanam terdiri penanaman tunggal, baris tunggal dan baris ganda diuji dalam penelitian ini. Parameter pertumbuhan dan hasil dianalis menggunakan aplikasi SPSS. Hasil penelitian menunjukkan tidak ada perbedaan respon varietas terhadap system tanam, dan jenis uwi putih bulat dengan system rambatan ganda memberikan hasil paling optimal mencapai setara 23 ton per hektar dengan jarak tanam (1,0 x 1,0 )m. Penelitian lain menunjukkan bahwa populasi dapat ditingkatkan hingga 20.000 tanaman per hektar (jarak tanam 0.5m x 1,0 m).

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Yalindua, A., Sudarsono, H. M. H. Bintoro, and A. Setiawan. "Morphological Diversity analysis of Yam (Dioscorea alata L.) from Banggai Islands, Indonesia." Journal of Physics: Conference Series 1317 (October 2019): 012064. http://dx.doi.org/10.1088/1742-6596/1317/1/012064.

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Abraham, K., and P. Gopinathan Nair. "Polyploidy and sterility in relation to sex in Dioscorea alata L. (Dioscoreaceae)." Genetica 83, no. 2 (January 1991): 93–97. http://dx.doi.org/10.1007/bf00058525.

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Cormier, Fabien, Floriane Lawac, Erick Maledon, Marie-Claire Gravillon, Elie Nudol, Pierre Mournet, Hélène Vignes, Hâna Chaïr, and Gemma Arnau. "A reference high-density genetic map of greater yam (Dioscorea alata L.)." Theoretical and Applied Genetics 132, no. 6 (February 20, 2019): 1733–44. http://dx.doi.org/10.1007/s00122-019-03311-6.

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Safitri, E., H. Humaira, N. Nazaruddin, S. Susilawati, M. Murniana, and N. D. Md Sani. "Dioscorea alata L anthocyanin extract methanol as a sensitive pH active compound." Journal of Physics: Conference Series 1869, no. 1 (April 1, 2021): 012058. http://dx.doi.org/10.1088/1742-6596/1869/1/012058.

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Arya, R. S., M. N. Sheela, M. L. Jeeva, and P. V. Abhilash. "Identification of Host Plant Resistance to Anthracnose in Greater Yam (Dioscorea alata L.)." International Journal of Current Microbiology and Applied Sciences 8, no. 08 (August 10, 2019): 1690–96. http://dx.doi.org/10.20546/ijcmas.2019.808.199.

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Hanifa, Dina, Suharyo Hadisaputro, Supriyana Supriyana, and Bedjo Santoso. "Purple Yam Extract (Dioscorea Alata L.) As Adjuvant Antihipertension Medicine for Postpartum Hipertension." STRADA Jurnal Ilmiah Kesehatan 9, no. 2 (November 1, 2020): 443–49. http://dx.doi.org/10.30994/sjik.v9i2.363.

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One third of women who have hypertension in pregnancy will continue to have high blood pressure during the postpartum period. Potential adjuvant pharmacological therapy is needed, one of them is purple yam extract which contains flavonoids and dioscorin. This type of research is a quasi experiment. The research respondents consisted of 16 people treated with purple yam extract 320 mg/day and nifedipine 10 mg/day and 16 people were given nifedipin 10 mg/day for 14 days. The results of the study were the systolic of the intervention group decreased by 28.12 mmHg and the control group decreased by 8.94 mmHg with a p-value of 0,000. The diastolic of the intervention group decreased by 18.43 mmHg and the control group decreased by 3.75 mmHg with a p-value of 0,000. The conclusion of this study is purple yam extract has the potential as an alternative therapy to reduce blood pressure in postpartum hypertension.

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dna, Van, K. D. Ameta, R. A. Kaushik, and M. K. Meena. "Genetic Variability Analysis in Greater Yam (Dioscorea alata L.) in Southern Rajasthan Conditions." International Journal of Current Microbiology and Applied Sciences 9, no. 8 (August 10, 2020): 3920–25. http://dx.doi.org/10.20546/ijcmas.2020.908.451.

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Miksusanti, Miksusanti, Herlina Herlina, and Wiwin Wiwin. "Modification of (Dioscorea alata l) starch with propylene oxide to make edible film." Science and Technology Indonesia 2, no. 4 (October 3, 2017): 96–101. http://dx.doi.org/10.26554/sti.2017.2.4.96-101.

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Hironobu, Shiwachi, Chen Shuwan, Matsumoto Ryo, Sanada Atusi, and Toyohara Hidekazu. "Anatomical observation on release of tuber dormancy in water yam (Dioscorea alata L.)." African Journal of Agricultural Research 8, no. 16 (May 2, 2013): 1365–69. http://dx.doi.org/10.5897/ajar12.1774.

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Wang, Tsu-Shing, Chong-Kuei Lii, Jen-Yun Chang, Chung-Ing Kuo, and Hsin-Pin Chen. "Anti-Fenton reaction activity of three taxa of water yam (Dioscorea alata L.)." International Journal of Food Science & Technology 42, no. 9 (September 2007): 1107–13. http://dx.doi.org/10.1111/j.1365-2621.2006.01397.x.

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Abraham, K., A. Nemorin, V. Lebot, and Gemma Arnau. "Meiosis and sexual fertility of autotetraploid clones of greater yam Dioscorea alata L." Genetic Resources and Crop Evolution 60, no. 3 (February 15, 2013): 819–23. http://dx.doi.org/10.1007/s10722-013-9973-4.

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Ouyabe, Michel, Naoto Tanaka, Yuh Shiwa, Nobuyuki Fujita, Hidehiko Kikuno, Pachakkil Babil, and Hironobu Shiwachi. "Rhizobium dioscoreae sp. nov., a plant growth-promoting bacterium isolated from yam (Dioscorea species)." International Journal of Systematic and Evolutionary Microbiology 70, no. 9 (September 1, 2020): 5054–62. http://dx.doi.org/10.1099/ijsem.0.004381.

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This study investigated endophytic nitrogen-fixing bacteria isolated from two species of yam (water yam, Dioscorea alata L.; lesser yam, Dioscorea esculenta L.) grown in nutrient-poor alkaline soil conditions on Miyako Island, Okinawa, Japan. Two bacterial strains of the genus Rhizobium , S-93T and S-62, were isolated. The phylogenetic tree, based on the almost-complete 16S rRNA gene sequences (1476 bp for each strain), placed them in a distinct clade, with Rhizobium miluonense CCBAU 41251T, Rhizobium hainanense I66T, Rhizobium multihospitium HAMBI 2975T, Rhizobium freirei PRF 81T and Rhizobium tropici CIAT 899T being their closest species. Their bacterial fatty acid profile, with major components of C19 : 0 cyclo ω8c and summed feature 8, as well as other phenotypic characteristics and DNA G+C content (59.65 mol%) indicated that the novel strains belong to the genus Rhizobium . Pairwise average nucleotide identity analyses separated the novel strains from their most closely related species with similarity values of 90.5, 88.9, 88.5, 84.5 and 84.4 % for R. multihospitium HAMBI 2975T, R. tropici CIAT 899T, R. hainanense CCBAU 57015T, R. miluonense HAMBI 2971T and R. freirei PRF 81T, respectively; digital DNA–DNA hybridization values were in the range of 26–42 %. Considering the phenotypic characteristics as well as the genomic data, it is suggested that strains S-93T and S-62 represent a new species, for which the name Rhizobium dioscoreae is proposed. The type strain is S-93T (=NRIC 0988T=NBRC 114257T=DSM 110498T).

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Saleha, Sitti, Nurdin Saidi, Saiful ., Murniana ., Saida Rasnovi, and Teuku M. Iqbalsyah. "NUTRITIONAL COMPOSITION OF DIOSCOREA HISPIDA FROM DIFFERENT LOCATIONS AROUND LEUSER ECOSYSTEM AREA." Jurnal Natural 18, no. 1 (February 1, 2018): 1–6. http://dx.doi.org/10.24815/jn.v18i1.8504.

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Proximate analysis of Dioscorea hispida tubers, collected from five locations around Leuser ecosystem in Aceh Province, showed variations amongst samples. Standard AOAC method for proximate analysis of the fresh weight showed that the water content varied between 15.8 - 37.8%, crude protein 1.13 -6.20%, crude lipid 1.99 - 9.36% and ash 0.29 - 1.24%. The total carbohydrate was high, i.e. between 58.3 -71.9%. The main mineral was phosphorus, with a value of 11.7 - 46.9 mg/100g. These variations could be due to soil, climate and weather factors, as well as postharvest handling. Phytochemical tests showed that all of the samples contained alkaloids and terpenoids. One of the samples (LP) also contained phenol and steroid. The high cyanide content in the tubers (379 - 739 ppm) was easily removed by repeated washing. The cyanide level dropped significantly after the 3rd wash. Information on nutritional content in D. hispida is essential for planning its utilization. Increasing the economic value of D. hispida is expected to attract people around the Leuser ecosystem to cultivate and utilize it, thereby reducing illegal forest encroachment.Keywords: Dioscorea hispida, proximate, Leuser, janeng, gadung, starchREFERENCESBarton H 2014 Yams: Origins and Development, Encyclopaedia of Global Archaeology, p 7943-7947, (Springer. DOI 10.1007/978-1-4419-0465-2_2193).Obidiegwu J E and Akpabio E M 2017 The Geography of Yam Cultivation in Southern Nigeria: Exploring Its Social Meanings and Cultural Functions J. Ethnic Foods 4 28-35.Chandrasekara A and Kumar T J 2016 Roots and Tuber Crops as Functional Foods: A Review on Phytochemical Constituents and Their Potential Health Benefits Intl. J. Food Sci. 2016 1-15.Kumar S, Das G, Shin H-S and Patra J K 2017 Dioscorea spp. (A Wild Edible Tuber): A Study on Its Ethnopharmacological Potential and Traditional Use by the Local People of Similipal Biosphere Reserve India Front. Pharmacol. 8 52.Lin J Y, Lu S, Liou Y L and Liou H L 2006a Antioxidant and Hypolipidaemic Effects of a Novel Yam–boxthorn Noodle in an In Vivo Murine Model Food Chem. 94 377–384.Lin J Y, Lu S, Liou Y L and Liou H L, 2006b, Increased IgA and IgG Serum Levels Using a Novel Yam–boxthorn Noodle in a BALB/c Mouse Model Food Chem. Toxicol. 44 170–178.Bhandari M R and Kawabata J 2004 Organic Acid, Phenolic Content and Antioxidant Activity of Wild Yam (Dioscorea spp.) Tubers of Nepal Food Chem. 88 163–168.Lin J T and Yang D J 2008 Determination of Steroidal Saponins in Different Organs of Yam (Dioscorea pseudojaponica Yamamoto) Food Chem. 108 1068–1074.AOAC 1984. Official Methods of Analysis. Washington DC: Association of Official Analytical Chemists.Harborne J B 1984 Phytochemical Method 2nd ed. (London: Chapman and Hall Ltd.)Bhandari M R, Kasai T and Kawabata J 2003 Nutritional Evaluation of Wild Yam (Dioscorea spp.) Tubers of Nepal Food Chem. 82 619–623.Adepoju O T, Boyejo O and Adeniji P O 2017 Nutrient and Antinutrient Composition of Yellow Yam (Dioscorea cayenensis) Products Data in Brief 11 428–431.Wu Z-G, Jiang W, Nitin M, Bao X-Q, Chen S-L and Tao Z-M 2016 Characterizing Diversity Based on Nutritional and Bioactive Compositions of Yam Germplasm (Dioscorea spp.) Commonly Cultivated in China J. Food Drug Anal. 24 367 – 375.Udensi E A, Osebele H O and Iweala O O 2008 The Investigation of Chemical Composition and Functional Properties of Water Yam (Dioscorea alata): Effect of Varietal Differences Pakistan J. Nutrition 7(2) 342-344.Hornick S B 1992 Factors Affecting the Nutritional Quality of Crops Am. J. Altern. Agric. 7 (Special Issue on Soil Quality) 63-68.Lewicki P P 2004 Water as the Determinant of Food Engineering Properties, A Review J. Food Eng. 61 483–495Yeh A-I, Chan T-Y and Chuang G C-C 2009 Effect of Water Content and Mucilage on Physico-chemical Characteristics of Yam (Discorea alata Purpurea) Starch J. Food Eng. 95 106–114.McPherson E and Jane J 1999 Comparison of Waxy Potato with Other Root And Tuber Starches Carbohydr. Polym. 40 57–70.Freitas R A, Paula R C, Feitosa J P A, Rocha S and Sierakowski M R 2004 Amylose Contents, Rheological Properties and Gelatinization Kinetics of Yam (Dioscorea alata) and cassava (Manihot utilissima) starches Carbohydr. Polym. 55 3–8.Barsby T L, Donald A M, Frazier P J, Donald A M, Perry P A and Waigh T A 2001 The Impact of Internal Granule Structure on Processing and Properties in Starch: Advances in Structure and Function p 45-52 (Royal Society of Chemistry, http://dx.doi.org/10.1039/9781847551917-00045)Tattiyakul J, Naksriarporn T and Pradipasena P 2012 X-ray Diffraction Pattern and Functional Properties of Dioscorea hispida Dennst Starch Hydrothermally Modified at Different Temperatures Food Bioproc. Technol. 5 964–971.Savikin-Fodulovic K, Grubisic D, Culafic L, Menkovic N and Ristic M 1998 Diosgenin and Phytosterols Content in Five Callus Lines of Dioscorea balcanica Plant Sci. 135 63–67.Cushnie T. P. T, Cushnie B and Lamb A J 2014 Alkaloids: An Overview of Their Antibacterial, Antibiotic-enhancing and Antivirulence Activities Int. J. Antimicrob. Agents 44 (5) 377-386.Tholl D 2015 Biosynthesis and Biological Functions of Terpenoids in Plants, Biotechnology of Isoprenoids p 63-106 Part of the Advances in Biochemical Engineering/Biotechnology book series (ABE, volume 148).Nagata K, Aistrup G L, Honda H, Shono T and Narahashi T 1999 Modulation of the Nicotinic Acetylcholine Receptor by Dioscorine in Clonal Rat Phaeochlomocytoma (PC12) Cells Pestic. Biochem. Physiol. 64 (3) 157–165.Bhandari M R and Kawabata J 2005 Bitterness and Toxicity in Wild Yam (Dioscorea spp.) Tubers of Nepal Plant Foods Hum. Nutr. 60 129–135, 2005.White W L B , Arias-Garzon D I, McMahon J M and Sayre R 1998 Cyanogenesis in Cassava: The Role of Hydroxynitrile Lyase in Root Cyanide Production Plant Physiol. 116 1219-25.Kumoro A C and Hartati I. 2015 Microwave Assisted Extraction of Dioscorin from Gadung (Dioscorea hispida Dennst) Tuber Flour, Procedia Chem. 14 47 – 55.

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Chen, Tao, Shihui Hu, Haiwen Zhang, Qingfeng Guan, Yuhui Yang, and Xuemei Wang. "Anti-inflammatory effects of Dioscorea alata L. anthocyanins in a TNBS-induced colitis model." Food & Function 8, no. 2 (2017): 659–69. http://dx.doi.org/10.1039/c6fo01273f.

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Islam, Md Tariqul, Rais Uddin Chowdhury, Rozina Afroz, Sajia Rahman, and Md Mamtazul Haque. "Characterization and Maintenance of Yam (Dioscorea Spp.) Germplasm." Bangladesh Journal of Agricultural Research 36, no. 4 (September 2, 2012): 605–21. http://dx.doi.org/10.3329/bjar.v36i4.11748.

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Three experiments were conducted with 60 germplasm accessions of yam (Dioscorea spp.) at Plant Genetic Resources Centre of BARI for characterization and conservation of germplasm. Fifty-nine germplasm accessions of D. alata L. and one accession of D. bulbifera L. from different districts of Bangladesh were used. Clockwise twining direction was found in D. bulbifera and anti-clockwise twining direction was exhibited in all D. alata germplasm accessions. Potato like aerial tuber was found in D. bulbifera. Round, oval, elongate, flattened to irregular aerial tuber shape were found. Grayed-brown, brown to grayed-orange skin colour with yellow, yellow-orange to grayed-orange of aerial tuber flesh colour were observed among the yam germplasm accessions. Oval-oblong, cylindrical, flattened, corm, rhizome to irregular shape of underground stem or tubers were observed. Low, medium to dense types of spiniess of roots were found on the tubers. Grayed-orange, red to black tuber skin colour along with white, yellowish-white, yellow, yelloworange, red to purple tuber flesh colours were found. Significant variations were also observed in stem shape at base, colour of stem, wing and petiole wing, position of leaf, leaf shape and distance between leaf lobes. Low to high phenotypic diversity was exhibited among the germplasm accessions. The germplasm accessions produced 1 to 30 under ground tubers per plant. The main tuber length ranged from 5.4 to 66.4 cm and breadth from 2.5 to 15.5 cm. The germplasm accessions produced 0.51 kg to 16.45 kg tuber yield per plant. The maximum variability was found in tuber yield per plant (98.74%) and the minimum was found in leaf length (12.55%).The under ground tubers of yam were harvested and replanted at an interval of two to three years from 1995 at PGRC. The plants were grown on bamboo trail in the field genebank. Necessary intercultural operations are done for maintaining the yam germplasm accessions. DOI: http://dx.doi.org/10.3329/bjar.v36i4.11748 Bangladesh J. Agril. Res. 36(4): 605-621, December 2011

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Rudito, Suwarto, Yuli Witono, Bernatal Saragih, and Enos Tangke Arung. "Phytochemical and Antioxidant Analysis of Fermented ‘Dayak’ Wild Yam (Dioscorea hispida Dennst), Purple Yam (Dioscorea alata) and Air Potato (Dioscorea bulbifera L.) Tuber Flour." IOP Conference Series: Earth and Environmental Science 810, no. 1 (August 1, 2021): 012005. http://dx.doi.org/10.1088/1755-1315/810/1/012005.

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Mizuki, Inoue, Naoya Osawa, and Tadaaki Tsutsumi. "Thrips (Thysanoptera: Thripidae) on the flowers of a dioecious plant, Dioscorea japonica (Dioscoreaceae)." Canadian Entomologist 137, no. 6 (December 2005): 712–15. http://dx.doi.org/10.4039/n05-003.

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The genus Dioscorea L. (Dioscoreaceae) is widely distributed throughout Africa and Asia and includes 500 to 650 species (Burkill 1960; Miège and Lyonga 1982), almost all of which are dioecious (Terauchi 1990). Pollination of species in this genus has received little attention because many of the cultivated species are propagated vegetatively from tubers. Insect visitors to flowers have been reported for two species, D. alata L. from India (Abraham and Nair 1990) and D. rotundata Poir. from Nigeria (Pitkin 1973; Segnou et al. 1992; Bournier 1994). Dioscorea japonica Thunb. is found throughout Japan, Korea, and China (Ohwi and Kitagawa 1983), but insect visitors to the flowers have not previously been reported. We investigated the insect visitors to flowers of D. japonica because the insect fauna associated with one species of a genus often differs from that associated with other species of the genus and may vary within a single species between different geographic regions (Kobayashi et al. 1999).

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Meena, Mithlesh Kumari, and R. S. Rathore. "Standardization of Minisett Technique in Greater yam (Dioscorea alata L.) Under Southern Rajasthan Conditions." International Journal of Current Microbiology and Applied Sciences 9, no. 3 (March 10, 2020): 2355–60. http://dx.doi.org/10.20546/ijcmas.2020.903.268.

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Odu, B. O., R. Asiedu, S. A. Shoyinka, and J. D'A Hughes. "Screening of Water Yam (Dioscorea alata L.) Genotypes for Reactions to Viruses in Nigeria." Journal of Phytopathology 154, no. 11-12 (December 2006): 716–24. http://dx.doi.org/10.1111/j.1439-0434.2006.01180.x.

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Rosida, Harijono, Teti Estiasih, and Endang Sriwahyuni. "Physicochemical Properties and Starch Digestibility of Autoclaved-Cooled Water Yam (Dioscorea alata L.) Flour." International Journal of Food Properties 19, no. 8 (April 14, 2016): 1659–70. http://dx.doi.org/10.1080/10942912.2015.1105818.

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Tamaroh, Siti, and Ajat Sudrajat. "Antioxidative Characteristics and Sensory Acceptability of Bread Substituted with Purple Yam (Dioscorea alata L.)." International Journal of Food Science 2021 (July 14, 2021): 1–9. http://dx.doi.org/10.1155/2021/5586316.

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In this study, plain bread was made by substituting wheat flour with purple yam flour (Dioscorea alata, L). The addition of 0, 10, 15, 20, and 30% purple yam flour aims to increase the functional value of plain bread as a source of natural antioxidants. The bread produced with two baking temperatures (170°C and 180°C) was tested for anthocyanin levels, total phenol, antioxidant activity (DPPH free radical scavenging), volume expansion, color, and preference test. The results showed that the temperatures of the bread baking did not affect anthocyanin levels, total phenol, antioxidant activity, volume expansion, and bread color ( p > 0.05 ). The substitution of purple yam flour had a significant effect on anthocyanin levels, total phenol, antioxidant activity, volume, and bread color ( p < 0.05 ). The levels of anthocyanins, total phenol, antioxidant activity, and darker color increased with the addition of purple yam flower whereas the rate of expansion reduced. However, the addition of purple yam flour did not affect the level of preference for the bread produced. Purple yam flour can be added to the manufacture of bread made from wheat flour as much as 30% with a baking temperature of 180°C. The resulting bread contained total anthocyanins 54.62 mg/100 g db, total phenol 391.14 mg EAG/100 g db, antioxidant activity 48.53% and volume expansion 64.85%, color L ∗ = 53.06 , a ∗ = 6.52 , b ∗ = 13.32 , C = 14.87 , H = 64.06 , and sensory score = 3.24 (preferred).

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