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Journal articles on the topic 'Yams Yams as food Philipinos'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Ackermann, Klaus. "Utilisation of wild growing yams as supplementary nutrition and its impact on the dry forest ecosystem in north-western Madagascar." Schweizerische Zeitschrift fur Forstwesen 155, no. 3-4 (2004): 80–88. http://dx.doi.org/10.3188/szf.2004.0080.

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Wild growing yams (Dioscorea spp.) are an important supplementary food in Madagascar, especially during periods of rice shortage in the rainy season. Yams grow in dry forests and there is a particularly high occurrence of yam tubers in recently burned, open secondary forest formations. The study found that the uncontrolled harvest of yams can contribute to the degradation of dry forests due to the high quantity of wild yams harvested by the local population and the widespread practice of intentionally burning forests to increase yams production.

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2

COURSEY, D. G. "Low temperature injury in yams." International Journal of Food Science & Technology 3, no. 2 (2007): 143–50. http://dx.doi.org/10.1111/j.1365-2621.1968.tb01449.x.

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3

ONAYEMI, O., A. OJO, and V. O. ADETUNJI. "PEELING OF YAMS FOR PROCESSING." Journal of Food Processing and Preservation 9, no. 3 (1985): 171–78. http://dx.doi.org/10.1111/j.1745-4549.1985.tb00717.x.

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4

Siqueira, MVBM. "Yam: a neglected and underutilized crop in Brazil." Horticultura Brasileira 29, no. 1 (2011): 16–20. http://dx.doi.org/10.1590/s0102-05362011000100003.

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In Brazil current studies and investments on yams are incipient. Similarly, the literature in recent decades lacks adequate information on this group of plants. The existing literature, on its turn, requires more than ever to be revised and organized. Yams have joined the so-called "neglected" group of crops for several reasons, but particularly because they are associated with poor and traditional communities. Many vegetables introduced in Brazil during the colonization period have adapted to different cropping systems, yams being an excellent example. This diversity resulted very widespread, yet poorly recognized in the country. In turn, the gardens using traditional farming systems continue to maintain and enhance yam local varieties. Studies from other countries, with an emphasis on characterization and genetic breeding, brought to light an urgent need for Brazil to invest in yams as a food rich in carbohydrates, even to the point of alterations in food public policy. Reversal of the yam's current stigma is both a challenge to the scientific community and to the population as a whole. This paper aims to raise pertinent questions about Dioscorea species, an important key group for many communities in tropical countries, yet still unrecognized as so in Brazil.

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5

Dos Santos Aguiar, Francisco Ivo, Francisco Gilvan Borges Ferreira Freitas Júnior, Raiane De Sousa Andrade, and Edmilson Igor Bernado Almeida. "Feed frequency and sensory evaluation of yams." REVISTA AGRO@MBIENTE ON-LINE 13 (September 3, 2019): 173. http://dx.doi.org/10.18227/1982-8470ragro.v13i0.5499.

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Several studies have highlighted the variations in consumption habits, compared to the perspectives on food, social class and lifestyles of society. Among the different food groups, underground vegetables are of great importance in human nutrition as one of the main energy sources available for food. Among them, the yam stands out for its high nutritional and energetic power. In this way, the aim was to define the frequency, consumption profile and yam preference, ‘Chinese’ and ‘São Tome’ varieties. For this, a questionnaire of socioeconomic nature, feeding frequency and sensorial evaluation was applied to 52 students of a public university. At the end of the study, it was found that 71% of the students knew the yam, but only 50% had ever consumed the vegetable. It was observed that 85% of the interviewees never or hardly ever consume the tuber, 29% do not know the vegetable and 50% never consumed. Regarding consumption reasons, 25% of the respondents chose the taste as the main reason to consume yam and only 3% consume by the appearance of the product. The interviewees had food frequency in relation to the yam, linked to the palatability of the vegetable (25%) and of the two varieties analyzed, 69% of the interviewees prefer to consume the ‘São Tome’ yam. Given the importance of food in this vegetable, it is important to stimulate consumption, especially among younger individuals, with ages ranging from 20 to 25 years.

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6

Omidiji, Olusesan, and Joy Okpuzor. "Time Course ofPPO-Related Browning of Yams." Journal of the Science of Food and Agriculture 70, no. 2 (1996): 190–96. http://dx.doi.org/10.1002/(sici)1097-0010(199602)70:2<190::aid-jsfa481>3.0.co;2-2.

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7

Farhat, Imad A., Tunde Oguntona, and Roger J. Neale. "Characterisation of starches from West African yams." Journal of the Science of Food and Agriculture 79, no. 15 (1999): 2105–12. http://dx.doi.org/10.1002/(sici)1097-0010(199912)79:15<2105::aid-jsfa510>3.0.co;2-r.

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8

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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9

Chilaka, Ferdinand C., Sabinus Eze, Clement Anyadiegwu, and Peter O. Uvere. "Browning in processed yams: peroxidase or polyphenol oxidase?" Journal of the Science of Food and Agriculture 82, no. 8 (2002): 899–903. http://dx.doi.org/10.1002/jsfa.1119.

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10

Aluko, O. B., and O. A. Koya. "Some engineering properties of yam setts from two species of yams." Journal of Food Engineering 76, no. 3 (2006): 396–401. http://dx.doi.org/10.1016/j.jfoodeng.2005.05.051.

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11

Fel, Benjamin, Anne Baudouin, Fabienne Fache, Sonia Czarnes, Vincent Lebot, and Laurent Legendre. "Caryatin and 3’-O-methylcaryatin contents in edible yams (Dioscorea spp.)." Journal of Food Composition and Analysis 102 (September 2021): 104010. http://dx.doi.org/10.1016/j.jfca.2021.104010.

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12

Muzac-Tucker, Ingrid, Helen N. Asemota, and Mohammed H. Ahmad. "Biochemical composition and storage of Jamaican yams (Dioscorea sp)." Journal of the Science of Food and Agriculture 62, no. 3 (1993): 219–24. http://dx.doi.org/10.1002/jsfa.2740620303.

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13

Ikediobi, Christopher O., Ralph L. Chelvarajan, and Agwu I. Ukoha. "Biochemical aspects of wound healing in yams (Dioscorea spp)." Journal of the Science of Food and Agriculture 48, no. 2 (1989): 131–39. http://dx.doi.org/10.1002/jsfa.2740480202.

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14

Siqueira, MVBM, WF Nascimento, LRG Silva, et al. "Distribution, management and diversity of yam local varieties in Brazil: a study on Dioscorea alataL." Brazilian Journal of Biology 74, no. 1 (2014): 52–61. http://dx.doi.org/10.1590/1519-6984.17112.

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Widely spread in the tropics, yams were introduced into Brazil during the colonial period and are currently grown throughout the country. Despite its importance as a pharmacological and food source, there is a lack of studies describing how and where this tuber is grown in Brazil. The aim of this study was to provide an overview of the cultivation and distribution of Dioscorea alata in different Brazilian regions. A total of 63 farmers were visited in different municipalities and communities in four regions in the country: South, Southeast, Northeast and Midwest. Semi-structured interviews were conducted to collect socio-economic, use, management and diversity data for this crop. The majority of interviewers were men, married, with children, using retirement benefits and agriculture as income and family labour as the main support in the yam cultivation. A wide distribution of this species was found, with the occurrence of D. alata in the four sampled regions. A variety of vernacular names for this species was collected, differing according to the region where it is cultivated. Most farmers cultivate yams in fields, however an increased usage of home gardens for the cultivation of this tuber was found. Also, most farmers cultivate yams in association with other crops in areas of different sizes and slash and burn practices, although mostly disappearing, are still being used by many farmers. The results of this study provide more concrete data on the distribution and diversity of this important crop.

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15

MORSE, STEPHEN, and NORA MCNAMARA. "IMPACT OF THE ADAPTED YAM MINISETT TECHNIQUE ON WARE YAM (DIOSCOREA ROTUNDATA) PRODUCTION UNDER FARMER-MANAGED CONDITIONS IN NIGERIA." Experimental Agriculture 53, no. 1 (2016): 131–43. http://dx.doi.org/10.1017/s0014479716000120.

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SUMMARYWhite yam (Dioscorea rotundata) is a major root crop grown throughout West Africa and a major limitation on its production is the availability of good quality (i.e. free of pests and diseases) planting material, notably seed yams. One of the methods developed to address this limitation is the Adapted Yam Minisett Technique (AYMT) and since 2012 the AYMT has been promoted in both Nigeria and Ghana via a Bill and Melinda Gates funded project entitled Yam Improvement for Income and Food Security in West Africa (YIIFSWA). While previously published studies have focussed on the agronomy of the sett-to-seed yam process, there has been no work done on the seed-to-ware yam stage which is critical in terms of farmer income and livelihood. This paper provides the first published evidence obtained under entirely farmer-managed conditions in Africa that shows seed yams produced via the AYMT can generate agronomic benefits in the water yam stage, including better germination, tuber numbers and weights.

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16

Vendl, Oliver, Christoph Wawrosch, Christian Noe, Carlos Molina, Günter Kahl, and Brigitte Kopp. "Diosgenin Contents and DNA Fingerprint Screening of Various Yam (Dioscorea sp.) Genotypes." Zeitschrift für Naturforschung C 61, no. 11-12 (2006): 847–55. http://dx.doi.org/10.1515/znc-2006-11-1213.

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Abstract In addition to the importance of many Dioscorea species (yams) as starchy staple food, some representatives are known and still used as a source for the steroidal sapogenin diosgenin, which, besides phytosterols derived from tall-oil, is an important precursor for partial synthesis of steroids for pharmaceutical research and applications. While in edible yams the diosgenin content should be as low as possible, a high yield of the compound is preferable for cultivars which are grown for the extraction of sterols. In the past, miscalculations and insufficiently precise techniques for quantification of diosgenin prevailed. Therefore we set out to re-evaluate the steroid content of a world collection of Dioscorea species, using leaves as sample material. We optimized diosgenin quantification techniques and fingerprinted the whole collection with the DNA amplification fingerprinting (DAF) technique. Total diosgenin contents ranged from 0.04 to 0.93% of dry weight within the collection. Several Dioscorea cultivars can be characterized via their DAF fingerprint patterns.

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17

ACHI, O. K. "Effect of Natural Fermentation of Yams (Discorea rotundata) on Characteristics of Processed Flour." Journal of Food Science 56, no. 1 (1991): 272–73. http://dx.doi.org/10.1111/j.1365-2621.1991.tb08032.x.

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18

Padhan, Bandana, Jayanta Kumar Nayak, and Debabrata Panda. "Natural antioxidant potential of selected underutilized wild yams (Dioscorea spp.) for health benefit." Journal of Food Science and Technology 57, no. 6 (2020): 2370–76. http://dx.doi.org/10.1007/s13197-020-04470-x.

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19

Inocent, Gouado, R. Aba Ejoh, T. Some Issa, Florian J. Schweig, and M. F. Tchouangue. "Carotenoids Content of Some Locally Consumed Fruits and Yams in Cameroon." Pakistan Journal of Nutrition 6, no. 5 (2007): 497–501. http://dx.doi.org/10.3923/pjn.2007.497.501.

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20

Lu, Ting Jang, Chia-Wen Yu, Yu-Chih Lin, and Huei-Ju Wang. "Simultaneous Analysis of Free/Bound Phytosterols and Diosgenin in Taiwanese Yams." Food Analytical Methods 10, no. 5 (2016): 1172–80. http://dx.doi.org/10.1007/s12161-016-0685-1.

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21

MacCarthy, Michelle. "Playing Politics with Yams: Food Security in the Trobriand Islands of Papua New Guinea." Culture, Agriculture, Food and Environment 34, no. 2 (2012): 136–47. http://dx.doi.org/10.1111/j.2153-9561.2012.01073.x.

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22

Eni, A. O., P. Lava Kumar, R. Asiedu, et al. "First Report of Cucumber mosaic virus in Yams (Dioscorea spp.) in Ghana, Togo, and Republic of Benin in West Africa." Plant Disease 92, no. 5 (2008): 833. http://dx.doi.org/10.1094/pdis-92-5-0833b.

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Yam (Dioscorea spp., family Dioscoreaceae) is one of the most important food crops cultivated in the West African yam zone comprising the forest and savannah areas of Nigeria, Ghana, Côte d'Ivoire, Republic of Benin, and Togo, which account for more than 90% of the 4.59 million ha of yam cultivation worldwide (1). A survey was conducted in 2005 to document viruses in yams in Ghana, Togo, and the Republic of Benin. Samples (1,405) from five species of yam showing mosaic, chlorosis, and stunting as well as asymptomatic plants were tested for Dioscorea bacilliform virus (DBV, genus Badnavirus), Yam mosaic virus (YMV, genus Potyvirus), and Yam mild mosaic virus (YMMV, genus Potyvirus), the three most common viruses infecting yams. In addition, samples were tested for Cucumber mosaic virus (CMV), since CMV was previously reported to infect yams in Côte d'Ivoire (2) and Nigeria (3). In protein-A sandwich-ELISA with polyclonal antibodies to a cowpea isolate of CMV, 23 of the 1,405 samples (6 of 218 samples from Togo, 13 of 628 samples from Ghana, and 4 of 559 samples from Republic of Benin) tested positive for CMV. The CMV-positive samples were from D. alata (N = 16) and D. rotundata (N = 7), whereas all samples from D. cayenensis, D. dumetorum, and D. bulbifera tested negative. CMV was detected as mixed infections with DBV, YMV, or YMMV in 21 of 23 samples. Some of these samples showed puckering, chlorosis, mottling, and crinkling, whereas some plants infected by two or more viruses were asymptomatic. Only two samples from D. rotundata had a single infection of CMV and they showed mild chlorotic symptoms in young leaves that were inconspicuous in mature leaves. In sap inoculations, the virus induced systemic mosaic in Nicotiana glutinosa. The presence of CMV in ELISA-positive yam samples was further confirmed by immunocapture-reverse transcription (IC-RT)-PCR using CMV antibodies as trapping antibody and oligonucleotide primers specific for a 485 nt corresponding to 3′ end of the coat protein gene and C-terminal noncoding region of RNA-3 (4). To confirm the specificity of IC-RT-PCR, the 485-bp amplicons from an isolate from the Republic of Benin was cloned into pCR2.1 (Invitrogen, Carlsbad, CA) and three independent clones were sequenced from both orientations. Pairwise comparison of a consensus sequence (Accession No. EU274471) with corresponding sequences of other CMV isolates deposited in GenBank showed 99% identity at the nucleotide sequence level (Accession No. U22821) and revealed that the CMV isolate from yam belongs to sub-Group IA. To our knowledge, this is the first report of CMV infection in yams (D. alata and D. rotundata) in Ghana, Togo, and the Republic of Benin. Together with a previous documentation of CMV in D. alata and D. trifida in Côte d'Ivoire and Nigeria (2,3), this report adds to existing knowledge on distribution of CMV in yams with implications for yam production and germplasm distribution in the West Africa Region. References: (1) FAO. Online publication. FAOSTAT, 2007. (2) C. Fauquet and J. C. Thouvenel. Plant Viral Diseases in the Ivory Coast. ORSTROM: Documentation Techniques. Paris, 1987. (3) Jd'A. Hughes et al. Phytopathology 87:S45, 1997. (4) S. Wylie et al. Aus. J. Agric. Res. 44:41, 1993.

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23

Tan, Fa-Jui, Fang-Yi Liao, Ya-Jing Jhan, and Deng-Cheng Liu. "Effect of replacing pork backfat with yams (Dioscorea alata) on quality characteristics of Chinese sausage." Journal of Food Engineering 79, no. 3 (2007): 858–63. http://dx.doi.org/10.1016/j.jfoodeng.2006.03.006.

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24

Dentan, Robert Knox. "Potential food sources for foragers in Malaysian rainforest; Sago, yams and lots of little things." Bijdragen tot de taal-, land- en volkenkunde / Journal of the Humanities and Social Sciences of Southeast Asia 147, no. 4 (1991): 420–44. http://dx.doi.org/10.1163/22134379-90003176.

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25

Ozo, Ozo N., and John C. Caygill. "O-dihydroxyphenoloxidase action on natural polyhydric phenolics and enzymic browning of edible yams." Journal of the Science of Food and Agriculture 37, no. 3 (1986): 283–88. http://dx.doi.org/10.1002/jsfa.2740370313.

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26

Riley, Cliff K., Perceval S. Bahado-Singh, Andrew O. Wheatley, Mohammed H. Ahmad, and Helen N. Asemota. "Relationship between the physicochemical properties of starches and the glycemic indices of some Jamaican yams (Dioscoreaspp.)." Molecular Nutrition & Food Research 52, no. 11 (2008): 1372–76. http://dx.doi.org/10.1002/mnfr.200700461.

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27

Mitchell, Sylvia A., Helen N. Asemota, and Mohammad H. Ahmad. "Factors affecting the in-vitro establishment of Jamaican yams (Dioscorea spp) from nodal pieces." Journal of the Science of Food and Agriculture 67, no. 4 (1995): 541–50. http://dx.doi.org/10.1002/jsfa.2740670418.

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28

Bean, Christine Simonian. "Sticky Performances: Affective Circulation and Material Strategy in the (Chocolate) Smearing of Karen Finley." Theatre Survey 57, no. 1 (2015): 88–108. http://dx.doi.org/10.1017/s0040557415000575.

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Although many artists have used food in performance, few are as famously or firmly associated with it as Karen Finley. At the start of Finley's career, almost all of her work was marked by unusual uses of food. Examples include sugared yams dumped over her backside while describing ageist rape in I'm an Ass Man (1985) and the concoction of crushed raw eggs and confetti sponged over her body to analogize social oppression in A Constant State of Desire (1986). Finley intended to channel spectators' excessive emotional and sensual reactions to her extreme, sometimes nauseating uses of food into an indictment of abusive attitudes toward people of marginalized identities. In this sense, the excess of the medium and the excess of the message were intended to correspond, creating a synergistic effect on the spectator.

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29

Wellington, M. A., та M. H. Ahmad. "Glutathione and β-amylase, peroxidase ando-diphenolase activities during sprouting of minisett yams (Dioscorea sp)". Journal of the Science of Food and Agriculture 62, № 3 (1993): 225–28. http://dx.doi.org/10.1002/jsfa.2740620304.

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30

Girardin, Olivier, Charlemagne Nindjin, Zakaria Farah, Felix Escher, Peter Stamp, and Dama Otokoré. "Use of gibberellic acid to prolong dormancy and reduce losses during traditional storage of yams." Journal of the Science of Food and Agriculture 77, no. 2 (1998): 172–78. http://dx.doi.org/10.1002/(sici)1097-0010(199806)77:2<172::aid-jsfa21>3.0.co;2-r.

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31

McAnuff, Marie A., Felix O. Omoruyi, Angela Sotelo-López, and Helen N. Asemota. "Proximate Analysis and Some Antinutritional Factor Constituents in Selected Varieties of Jamaican Yams (Dioscorea and Rajana spp.)." Plant Foods for Human Nutrition 60, no. 2 (2005): 93–98. http://dx.doi.org/10.1007/s11130-005-5105-0.

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32

Lekawael, Wilhelmina, and Alwi Smith. "IDENTIFIKASI DAN PEMANFAATAN JENIS UBI-UBIAN DI DESA ILMARANG KECAMATAN DAWELOR DAWERA KABUPATEN MALUKU BARAT DAYA." BIOPENDIX: Jurnal Biologi, Pendidikan dan Terapan 2, no. 2 (2016): 127–32. http://dx.doi.org/10.30598/biopendixvol2issue2page127-132.

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Background: Cassava (Dioscorea sp.) Is a seasonal crop with twisted stems and forming yam. Sweet potatoes contain a large amount of carbohydrates, can be the basic ingredients of making flour, ethanol or alcohol. Method: The population in this study were 25 community-owned yams. This research conducted for 1 month from January 6 to February 6, 2016. Variable in this research is identification of type of sweet potato in Ilmarang Village. Result: Identification of 25 community gardens found 4 types of potatoes consisting of: cassava (Manihot esculenta Crants), sweet potato (Ipomea batatas L.), yam taro (Colocasia esculeata L.) and yam gembili (Diascorea esculenta L). Conclusion: Utilization of cassava as staple food of rice substitute and processed into various kinds of products such as crackers and food

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33

Morse, Stephen. "Environmental and economic impacts of pesticide treatment in the Yam Minisett Technique." Experimental Agriculture 56, no. 5 (2020): 662–76. http://dx.doi.org/10.1017/s0014479720000228.

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AbstractWhite yam (Dioscorea rotundata) is an important tuber crop in a number of countries, but especially in West Africa where it serves as a food staple as well as a cash crop as excess production is sold in local markets. But the availability of quality planting material, most notably seed yams, for yam production remains an important constraint for farmers. Techniques have been developed to help address this limitation by cutting yam tubers into pieces (minisetts), treating them with the pesticide either via a seed dressing dust or pesticide ‘dips’ and planting to grow seed yams of the required size and quality. But while there have been many studies on the agronomy and adoption by farmers of these techniques, there have been fewer studies on their economic performance. Indeed, to date there have been no studies that compare the economic performance of treating setts compared to leaving them untreated, and neither has there been any analysis of the environmental impact of treating setts. This paper reports the results of a study designed to address these two gaps in knowledge and is based upon results from a series of farmer-managed seed yam plots established in the middle belt of Nigeria over 4 years (2013–2016). Results suggest that revenue and gross margin were higher for treated versus untreated setts although the latter still performed relatively well. Using the Field Use Environmental Impact Quotient (EIQ), the commonly recommended pesticide sett treatments were estimated to have a low-to-moderate environmental impact, and further research is needed to see how far pesticide use can be reduced to still be effective and minimise any environmental impact.

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34

Awipi, G. M. "THE ROLE OF NIGERIAN STAPLES: YAMS ((DIOSCOREA ALATA. L), AND CASSAVA (MANIHOT ESCULENTA) ON DECREASING MENOPAUSAL SYMPTOMS." Journal of the American Dietetic Association 103 (September 2003): 90. http://dx.doi.org/10.1016/s0002-8223(08)70143-3.

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35

Nindjin, C., D. Otokoré, S. Hauser, A. Tschannen, Z. Farah, and O. Girardin. "Determination of relevant sensory properties of pounded yams (Dioscorea spp.) using a locally based descriptive analysis methodology." Food Quality and Preference 18, no. 2 (2007): 450–59. http://dx.doi.org/10.1016/j.foodqual.2006.05.005.

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36

Lee, Ho-Joon, Hyun-Jin Park, Jin-Woong Jeong, Dongman Kim, and Manjeet S. Chinnan. "Effect of electrolyzed water treatments on the quality of hand- and machine-peeled yams (Dioscorea spp.) during cold storage." LWT - Food Science and Technology 40, no. 4 (2007): 646–54. http://dx.doi.org/10.1016/j.lwt.2006.05.006.

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37

Padhan, Bandana, Meghali Biswas, Nabin Kumar Dhal, and Debabrata Panda. "Evaluation of mineral bioavailability and heavy metal content in indigenous food plant wild yams (Dioscorea spp.) from Koraput, India." Journal of Food Science and Technology 55, no. 11 (2018): 4681–86. http://dx.doi.org/10.1007/s13197-018-3388-3.

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38

Wickham, Lynda D. "Successful manipulation of the growth cycle of yam (Dioscorea spp.) for year-round production for food security and climate change." Tropical Agriculture 96, no. 1 (2019): 27–39. http://dx.doi.org/10.37234/ta/0000960103.

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Yams are important items of diet throughout the Caribbean Region and, among them, the cultivars of the species, Dioscorea alata L. and D. esculenta (Lour.) Burkill are particularly important in the Eastern and Southern Caribbean, although the latter is so to a lesser extent. With a growing period of approximately nine months and a corresponding dormancy period, these cultivars are produced on an annual basis like clockwork, providing food yams for approximately three months of the year, the period of availability coinciding with the period of dormancy as the latter marks the natural period of storage of the tuber. Consequently, the breakage of dormancy marks the beginning of the end of natural storage as the emerging sprouts signal the onset of the next growing period. This coincides with the start of the rainy season and the yam is adapted to existing climatic conditions that provide the ideal environment for both plant establishment and tuber growth. Cultivars of the two species bear no reproductive seed and therefore, are completely dependent on vegetative means for perpetuation. Any adverse development during storage or early growth that prevents sprouting or tuber initiation and growth, results in the permanent loss of the affected material and potentially threatens loss of the specific cultivar. Hence, climate change events such as shifts in the onset of the rainy season, extension of the dry period and incidences of severe weather associated with excessive flooding that can result in death of roots and developing tubers, pose real risks to the persistence of the cultivars of D. alata and D. esculenta that are produced in the Caribbean Region. In order to counteract these effects, what is needed is the manipulation of the growth cycle to allow for year-round production so that the changes that have been observed with respect to climatic and weather patterns will not result in a loss of planting material and, by extension, loss of germplasm. It is well-established that the growth cycle is under hormonal control and that the key to year-round production is the breaking of the physiological lock on the growth cycle that is responsible for the seasonal production by which these species are characterized. There have been many attempts by researchers in the past to achieve this, but without success until relatively recently. Most attempts have explored the use of natural and synthetic plant growth regulators. Further, past attempts have focussed on the breakage of natural dormancy and induction of early sprouting, but instead, the success reported here, was achieved by delaying sprouting to beyond the period of natural dormancy in a novel approach that eliminates the use of growth regulators and other chemicals. This paper reports how reduced temperature storage has been used successfully to break the physiologically controlled growth cycle in cultivars of D. alata and D. esculenta, producing yams all year long by delaying the breakage of dormancy, ensuring not only an extension of the availability of yam tubers for food but also availability of viable planting material throughout the year. It was found that tubers can be stored successfully for an entire cycle, so that tubers from the previous year can meet tubers of the current year’s harvest providing a buffer against crop loss from any adverse biotic or climatic event. The effects on sprouting patterns are described. The use of reduced temperature storage for this purpose has not been reported and this account serves to fill an important gap in documented yam dormancy research.

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HAN, Yong-chao, Xiang-guo ZENG, Fa-yun XIANG, et al. "Carbendazim sensitivity in populations of Colletotrichum gloeosporioides complex infecting strawberry and yams in Hubei Province of China." Journal of Integrative Agriculture 17, no. 6 (2018): 1391–400. http://dx.doi.org/10.1016/s2095-3119(17)61854-9.

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OTEGBAYO, B., J. AINA, R. ASIEDU, and M. BOKANGA. "Pasting characteristics of fresh yams (Dioscorea spp.) as indicators of textural quality in a major food product – ‘pounded yam’." Food Chemistry 99, no. 4 (2006): 663–69. http://dx.doi.org/10.1016/j.foodchem.2005.08.041.

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Muzac-Tucker, Ingrid, and Mohammed H. Ahmad. "Rapid detection of polymorphism in yams (Dioscorea sp) through amplification by polymerase chain reaction and rDNA variation." Journal of the Science of Food and Agriculture 67, no. 3 (1995): 303–7. http://dx.doi.org/10.1002/jsfa.2740670305.

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Verter, Nahanga, and Věra Bečvářová. "An Analysis of Yam Production in Nigeria." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 63, no. 2 (2015): 659–65. http://dx.doi.org/10.11118/actaun201563020659.

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Yams as a stable food crops do not only serve as integral vehicle for food security, but also as a source of income, and employer of labour in the producing areas in Nigeria. Lack of finance, inadequate farm inputs, storage facilities and high cost of labour are identified as the primary constraints to yam production in the country. This article deals with most of the determinants of yam production, constraints and the importance yam products in Nigeria. The findings of the study suggest that farm size, producer price, fertilizer use, yield (Hg/Ha), and economic growth have a positive influence on yam production in Nigeria. On the contrary, the result shows an inverse relationship between commercial loans and yam production in the country. There is an urgent need for the Nigerian government to provide a conducive environment and investment climate by subsidising farm inputs and providing affordable loans to the smallholder yam farmers for a sustainable production.

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Washaya, S., J. F. Mupangwa, and E. Muranda. "Nutritional Value and Utilization of Yams (Dioscorea steriscus) by Residents of Bindura Town High Density Suburbs, Zimbabwe." Advances in Agriculture 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/5934738.

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The objective of this study was to assess utilization levels, availability, nutritional value, and magnitude of sales by vendors ofDioscorea steriscusby residents of Bindura. A multistage sampling procedure was used to select respondents. Data were subjected to Chi-square, logistic regression, and correlation to determine the effects of demographic determinants on utilization ofD. steriscus. Questionnaires were used to collect data. Results show that education status and period of stay significantly affect the consumption ofD. steriscus(P<0.05). It was also observed that consumption is frequent between lunch and supper (47%) compared to breakfast.D. steriscushas high iron (6.8%), ash (2.06%), and CF (16.8%) contents but it is low in protein (0.83%). Irrespective of gender of respondent, suburb of residence, size of family, period of stay, education level, employment status, and source of income, respondents will growD. steriscusfor use as food supplement (odds ratio = 0.475). The period of stay (r=0.08) and education level (r=0.08) positively affect the growing ofD. steriscus.D. steriscuscan be used as source of energy and can also be used possibly for medicinal purposes. Further study is required on possibility of phytochemicals and cytotoxic components to justify its use.

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Majekodunmi, Omodamiro Rachel, Ojimelukwe P.C, Asiedu R, and Etudaiye H.A. "EFFECT OF FUSARIUM NYGAMAI INFECTION ON THE CHEMICAL COMPOSITION OF FLOUR FROM TWO YAM VARIETIES." JOURNAL OF ADVANCES IN CHEMISTRY 12, no. 1 (2015): 3881–87. http://dx.doi.org/10.24297/jac.v12i1.842.

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Yams (Dioscorea spp) are among the oldest food crops. It is estimated that after six months of storage up to 56% of the crop is lost to rot. In Nigeria, fresh yam tubers are used for production of Elubo (yam flour) for preparation of amala, as it is called among the Yoruba in Western Nigeria, and akwunaji in the east of the River Niger. Many researchershave emphasized the importance of microbial rotting in causing storage losses. This study evaluated the effect of yam rot on the nutritional values of Fusarium infected yam tubers.Tubers from two yam (Dioscorea rotundata Poir.)varieties-Nwopoko and TDr95/19177-were infected with Fusarium nygamai pure culture and stored for 12 weeks, after which the tubers were used to produce yam flour and were analyzed for their nutrient composition comprising: dry matter/ moisture content, ash, total sugar, starch, amylose, vitamin C, protein and tannins. Wholesome yams of the same varieties were also used to produce yam flour and equally evaluated for the same nutrients. Infection with Fusariumnygamai led to a significant reduction (p<0.05) in the nutrient composition of the infected yam flour compared with those ofwholesome samples. Vitamin C content reduced from 41.10 to 27.26 (mg/100g) in variety Nwopoko and 36.30 to 30.53 (mg/100g); in variety TDr95/19177. Corresponding values for protein content was from 5.05 to 4.60% and 4.93 to 4.62%; Ash Content from 1.32 to 1.30% and 1.36 to 1.24%; Total Sugar Content from 5.34 to 5.20% and 5.21 to 5.02%; Starch 78.71 to 77.61 and 89.28 to 81.53%; Amylose from 29.95 to 28.87% and 30.01 to 27.95%. However, an increase in the tannin content – (1.84 and 1.94 mg/g) as against (0.31 and 0.26 mg/g) in Nwopoko and TDr 95/19177 varieties respectively was observed. The increase in the tannin content implies an increase in the antinutrient composition. The tendency to produce Elubo used for preparation of amala with rotten yam (possibly Fusarium infected) should be discouraged.

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Chiu, Hsiang-Wen, Jin-Chyau Peng, Shwu-Jene Tsai, and Wai-Bun Lui. "Effect of Extrusion Processing on Antioxidant Activities of Corn Extrudates Fortified with Various Chinese Yams (Dioscorea sp.)." Food and Bioprocess Technology 5, no. 6 (2011): 2462–73. http://dx.doi.org/10.1007/s11947-011-0675-7.

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Cornet, D., J. Sierra, and R. Bonhomme. "Characterization of the photosynthetic pathway of some tropical food yams (Dioscorea spp.) using leaf natural ¹³C abundance." Photosynthetica 45, no. 2 (2007): 303–5. http://dx.doi.org/10.1007/s11099-007-0050-0.

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Zeng, Xiaoxuan, Dahui Liu, and Luqi Huang. "Metabolome Profiling of Eight Chinese Yam (Dioscorea polystachya Turcz.) Varieties Reveals Metabolite Diversity and Variety Specific Uses." Life 11, no. 7 (2021): 687. http://dx.doi.org/10.3390/life11070687.

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The Chinese yam (Dioscorea polystachya Turcz.) is an underutilized orphan tuber crop. However, in China it has been used in traditional medicine and food for centuries due to the presence of high starch, protein, fiber, and biologically active compounds. Knowledge on the metabolomic profiles of Chinese yam varieties is needed to explore the underutilized metabolites and variety specific uses. Here, the metabolome of eight Chinese yam varieties that are cultivated in different Chinese regions was profiled. A total of 431 metabolites belonging to different biochemical classes was detected. The majority of detected metabolites were classified as amino acids and derivatives. The different yam varieties offer unique uses; e.g., Hebei Ma Yam, Henan Huai Yam, and Henan Wild Yam were the most metabolically enriched and suitable as food and medicine. Yams from Hubei region had comparable nutritional profiles, which is most probably due to their geographical origin. Specifically, Henan Wild Yam had the highest concentrations of diosgenin, vitamins, and polysaccharides. Overall, this study presents a metabolome reference for D. polystachya varieties.

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Zahro, Alvin Nur. "NGROWOT FASTING URGENCY IN TASAWUF PERSPECTIVE AND HEALTH SCIENCE." Journal Intellectual Sufism Research (JISR) 3, no. 1 (2020): 22–25. http://dx.doi.org/10.52032/jisr.v3i1.87.

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Abstract. Ngrowot fasting is one of the fasting traditions of Java (kejawen) which is based on the Javanese calendar, with the intention to increase metaphysical spiritual power. Perpetrators of fasting may eat as normal days, but are restricted not allowed to eat from the basic ingredients of rice, can be replaced with tubers, corn, yams. This study aims to determine the urgency of fasting ngrowot in the perspective of Sufism with the relationship in health science. The method used in this research is library research which takes data from books, journals, magazines, documents or pure library research related to the object of research. Suarni's research results, 2009 showed that corn contained food fiber, essential fatty acids, isoflavones, minerals, b-carotene, essential amino acid composition, and others. The fasting of ngrowot perspective of sufism and health science can cause the fasting person to ngrowot his soul to be calmer and more enthusiastic to carry out worship to Allah SWT.

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Kastanja, Ariance Yeane, Zeth Patty, and Zakarias Dilago. "Potential Types of Plants as Food Sources In Galela Coastal Community." Agrikan: Jurnal Agribisnis Perikanan 13, no. 2 (2020): 369. http://dx.doi.org/10.29239/j.agrikan.13.2.369-377.

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The objectives of this study are 1). Knowing the types of plants that have the potential as a food source 2) Knowing which parts of plants are used as foodstuffs 3) Knowing how to process plant species as a source of food for the people on the coast of Galela, while the benefit of this research is the identification of plant types that have the potential to be a source of food for the community galela area. The method used is a survey method by giving structured questions. Primary data is data from interviews with respondents and direct observation in the field, which includes; observation data on plant species, (2) parts of the plant used (3) how to process the food material. Respondents in this study were housewives in the coastal area of Galela with a total of 65 respondents. The results showed that 1) there were 35 types of plants and 20 families that were used by the community as food sources, both cultivated and found in nature. The parts of plants consumed by the community vary, ranging from leaves, stems, flowers, fruit, tubers, rhizomes, to leaf buds. The leaves, flowers, young stems are mostly consumed as vegetables. 3) The types of bananas and yams consumed as staple food are usually processed by boiling, coconut milk, or frying them.

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Crawford, Kahlon, Wang, and Friedman. "Acrylamide Content of Experimental Flatbreads Prepared from Potato, Quinoa, and Wheat Flours with Added Fruit and Vegetable Peels and Mushroom Powders." Foods 8, no. 7 (2019): 228. http://dx.doi.org/10.3390/foods8070228.

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Flatbreads are a major food consumed worldwide. To mitigate an undesirable safety aspect of flatbreads that might be associated with the potentially-toxic compound acrylamide, we recently developed recipes using a variety of grains that resulted in the production of low-acrylamide flatbreads. To further enhance the functionality of flatbreads, we have developed, in this work, new experimental flatbreads using potato, quinoa, and wheat flours supplemented with peel powders prepared from commercial nonorganic and organic fruits and vegetables (apples, cherry tomatoes, melons, oranges, pepino melons, sweet potato yams), potato peels, and mushroom powders (Lion’s Mane, Hericium erinaceus; Reishi, Ganoderma lucidum; and Turkey Tail, Trametes versicolor). These additives have all been reported to contain beneficial compositional and health properties. The results of fortification of the baked flatbreads showed either no effect or increases in acrylamide content by unknown mechanisms. Since the additives did not increase the acrylamide content of the quinoa flour flatbreads for the most part, such supplemented quinoa flatbreads have the potential to serve as a nutritional, gluten-free, low-acrylamide, and health-promoting functional food. Mushroom powder-fortified wheat flatbreads with relatively low acrylamide content may also have health benefits.

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