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Artículos de revistas sobre el tema "Glucomannanes"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 20 de abril de 2024

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1

Nugraheni, Bekti, Anastasia Setyopuspito P, and Yustisia Dian Advistasari. "IDENTIFIKASI DAN ANALISIS KANDUNGAN MAKRONUTRIEN GLUKOMANAN UMBI PORANG (Amorphophallus onchophyllus)." JIFFK : Jurnal Ilmu Farmasi dan Farmasi Klinik 15, no. 2 (2018): 77. http://dx.doi.org/10.31942/jiffk.v15i2.2570.

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ABSTRACTThe purpose of this study is identification and analysis of the macronutrient glucomannan from porang tuber (Amorphophallus onchopyllus). The stages done in this research are extraction, identification, and macronutrient analysis of glucomannan of the porang tuber. Prior to extraction, the oxalic acid was removed from porang tuber using mixture of 2% lime juice and 5% lime, then the glucomannans was extracted using ultrasonic method. The glucomannan then was identified using Fourier transform infra red spectrometer (FTIR) instrument and macronutrient analyzer such as Soxhlet method for

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2

Dyah Hesti Wardhani, Dyah Hesti Wardhani, Irsyadia Nindya Wardana Irsyadia Nindya Wardana, Hana Nikma Ulya Hana Nikma Ulya, Andri Cahyo Kumoro Andri Cahyo Kumoro, and Nita Aryanti Nita Aryanti. "Properties of Spray-Dried Iron Microcapsule using Hydrolysed Glucomannan as Encapsulant: Effect of Feed Viscosity." Sains Malaysiana 52, no. 6 (2023): 1699–710. http://dx.doi.org/10.17576/jsm-2023-5206-07.

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As one of the polysaccharides with high viscocity, even in low concentration, glucomannan could block the nozzle and hinder its application as spray-dried encapsulant. The present research aimed to investigate the effect of viscosity of hydrolysed glucomannan as a spray-dryer feed on properties of encapsulated iron particles. Glucomannan was hydrolysed using cellulase to obtain various viscosities (83-222 cP) and used for encapsulating iron. Enzymatic hydrolysis reduced the glucomannan's glass transition temperature and transmittance values of O-H, C-O, and C-H groups. Increasing the viscosity

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3

Monot, Claire, Christine Chirat, Brieuc Evangelista, and Marie-Christine Brochier-Salon. "Characterisation of lignin and lignin-carbohydrate complexes (LCCs) in prehydrolysed wood chips." Holzforschung 71, no. 3 (2017): 199–205. http://dx.doi.org/10.1515/hf-2016-0034.

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Abstract Isolation and analysis of lignin and lignin-carbohydrate complexes (LCCs) were performed to understand the better delignification ability of prehydrolysed wood chips. Lignin analysis showed that prehydrolysis led to a slight depolymerisation and an increase in free phenolic group content. The yield measurement and composition analysis of LCCs of mixed softwoods (SWs) and mixed hardwoods (HWs) revealed essential differences. In the case of SW, the amounts of lignin and xylan involved in LCCs were significantly lowered, whereas in the case of HW, less cellulose, glucomannans, and xylans

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4

HOGG, Deborah, Gavin PELL, Paul DUPREE, et al. "The modular architecture of Cellvibrio japonicus mannanases in glycoside hydrolase families 5 and 26 points to differences in their role in mannan degradation." Biochemical Journal 371, no. 3 (2003): 1027–43. http://dx.doi.org/10.1042/bj20021860.

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β-1,4-Mannanases (mannanases), which hydrolyse mannans and glucomannans, are located in glycoside hydrolase families (GHs) 5 and 26. To investigate whether there are fundamental differences in the molecular architecture and biochemical properties of GH5 and GH26 mannanases, four genes encoding these enzymes were isolated from Cellvibrio japonicus and the encoded glycoside hydrolases were characterized. The four genes, man5A, man5B, man5C and man26B, encode the mannanases Man5A, Man5B, Man5C and Man26B, respectively. Man26B consists of an N-terminal signal peptide linked via an extended serine-

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5

Jales, Silvana T. L., Raquel de M. Barbosa, André C. de Albuquerque, et al. "Development and Characterization of Aloe vera Mucilaginous-Based Hydrogels for Psoriasis Treatment." Journal of Composites Science 6, no. 8 (2022): 231. http://dx.doi.org/10.3390/jcs6080231.

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The Aloe vera (L.) Burman f. pulp extract (AE), obtained from the inner parts of Aloe vera leaves, is rich in polysaccharides, including glucomannans, acemannans, pectic compounds, cellulose, and hemicelluloses; acemannan and glucomannan are considered the two main components responsible for most of the plant’s therapeutical properties. Besides having anti-inflammatory activity, these polysaccharides accelerate wound healing and promote skin regeneration, thus they can be utilized in healing products. The objective of this study was to develop Aloe vera mucilaginous-based hydrogels for topical

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6

Li, Yuwei, Yu Liu, Senio Campos de Campos de Souza, et al. "Differential Foreign Body Reactions between Branched and Linear Glucomannan Scaffolds." Journal of Functional Biomaterials 13, no. 4 (2022): 293. http://dx.doi.org/10.3390/jfb13040293.

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The extent and patterns of foreign body reaction (FBR) influence the function and feasibility of biomaterials. Polysaccharides, as an important biomaterial category, have received increasing attention in diverse biomaterials design and biomedical applications due to their excellent polymeric and biocompatible characteristics. Their biological effects are usually associated with their monosaccharide composition or functional groups, yet the contribution of their glycan structure is still unknown. Herein, two glucomannans, similar in composition and molecular weight with differences in glycan st

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7

Ye, Guangying, Jinhui Zhang, Xiaoli Xu, Canbiao Zeng, Qingsheng Ye, and Zaihua Wang. "Comparative Analysis of Water-Soluble Polysaccharides from Dendrobium Second Love ‘Tokimeki’ and Dendrobium nobile in Structure, Antioxidant, and Anti-Tumor Activity In Vitro." International Journal of Molecular Sciences 24, no. 12 (2023): 10361. http://dx.doi.org/10.3390/ijms241210361.

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With potential anti-tumor and antioxidant properties, the polysaccharide content of D. nobile is relatively lower than that of the other medicinal Dendrobium. To find high-content polysaccharide resources, the polysaccharide (DHPP-Ⅰs) was prepared from D. Second Love ‘Tokimeki’ (a D. nobile hybrid) and compared with DNPP-Ⅰs from D. nobile. DHPP-Is (Mn 31.09 kDa) and DNPP-Is (Mn 46.65 kDa) were found to be O-acetylated glucomannans (-Glcp-(1,4) and O-acetylated-D-Manp-(1,4) backbones), analogous to other Dendrobium polysaccharides. DHPP-Ⅰs had higher glucose content (31.1%) and a lower degree (

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8

Mizutani, Kimiya, Vânia O. Fernandes, Shuichi Karita, et al. "Influence of a Mannan Binding Family 32 Carbohydrate Binding Module on the Activity of the Appended Mannanase." Applied and Environmental Microbiology 78, no. 14 (2012): 4781–87. http://dx.doi.org/10.1128/aem.07457-11.

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ABSTRACTIn general, cellulases and hemicellulases are modular enzymes in which the catalytic domain is appended to one or more noncatalytic carbohydrate binding modules (CBMs). CBMs, by concentrating the parental enzyme at their target polysaccharide, increase the capacity of the catalytic module to bind the substrate, leading to a potentiation in catalysis.Clostridium thermocellumhypothetical protein Cthe_0821, defined here asC. thermocellumMan5A, is a modular protein comprising an N-terminal signal peptide, a family 5 glycoside hydrolase (GH5) catalytic module, a family 32 CBM (CBM32), and a

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9

Larasati, Y. N., E. Harmayani, J. Widada, N. Nurliyani, and A. Perdinan. "Caecal bacterial composition of broiler chickens affected by porang glucomannan." Journal of the Indonesian Tropical Animal Agriculture 46, no. 3 (2021): 187–98. http://dx.doi.org/10.14710/jitaa.46.3.187-198.

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Glucomannan is consisted of D-glucose and D-mannose with β-1.4 linkages. Poultry had no enzyme to digest β linkage so that porang (Amorphophallus onchophyllus) glucomannan could be a prebiotic candidate. The study purposed to determine the effect of porang glucomannan on caecum bacterial composition (similarity, diversity, grouping of bacteria) using Terminal Restriction Fragment Length Polymorphisms method and performance (body weight gain, feed intake, feed conversion ratio) of broiler chickens. One hundred and eighty unsexed day old chicks (DOC) were divided into 6 treat-ments and 3 replica

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10

Afifaha, N., K, E. A. Krisanti, W. W. Purwanto, and A. Sarifudin. "Make a 5 Keyword, The Application of Natural Deep Eutectic Solvents (Betaine-Glycerol) for Isolating Glucomannan from Porang Flour (Amorphophallus muelleri Blume)." BIO Web of Conferences 69 (2023): 03005. http://dx.doi.org/10.1051/bioconf/20236903005.

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Porang tuber (Amorphophallus muelleri Blume) contains a high amount of glucomannan, an indigestible dietary fiber. Glucomannan is generally isolated using ethanol. To overcome competition with food and feed in the production of bioethanol, it is proposed to use Natural Deep Eutectic Solvents (NADES) for isolating glucomannan. This study evaluated the application of NADES and ethanol to isolate glucomannan from porang flour. The NADES was prepared by mixing betaine and glycerol in different mole ratios. (1:1, 1:2, and 1:3). The result showed that the obtained glucomannan flour ranged from 74.36

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11

Wardhani, Dyah H., Hana N. Ulya, Irvan Maulana, Shafira Salsabila, Andri C. Kumoro, and José A. Vázquez. "Analyzing the characteristics of degraded glucomannan of <i>Amorphophallus oncophyllus</i> using hydrogen peroxide and ultrasonication." AIMS Agriculture and Food 8, no. 2 (2023): 566–84. http://dx.doi.org/10.3934/agrfood.2023031.

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<abstract> <p>Glucomannan, one of the viscous polysaccharides, has been applied for various purposes in food industries. However, its high viscosity limits glucomannan in some applications e.g., as an injectable material and encapsulant in the spray drying method. Hence, glucomannan modification is needed to fulfill specific characteristics in such applications. This study investigated the modification of glucomannan properties under degradation treatment using hydrogen peroxide and ultrasonication in ethanol solvent. The modifications of glucomannan were conducted in a 35% hydroge

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12

Darmawati, Darmawati, Syaiful Bahri, and Husain Sosidi. "Analisis Kadar Glukomanan Dari Biji Durian (Durio zeibethinus Murr) dengan Metode Spektrofotometri pada Berbagai Waktu dan Suhu Hidrolisis." KOVALEN: Jurnal Riset Kimia 6, no. 2 (2020): 158–64. http://dx.doi.org/10.22487/kovalen.2020.v6.i2.11582.

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Durian seeds are one type of seed that contains glucomannan. The aim is to determine glucomannan levels in the durian seed. The study was designed using a completely randomized design (CRD). The extracted glucomannan was determined by the spectrophotometry method at various temperature and hydrolysis time. The crude extract of glucomannan was hydrolyzed using 3 M HCl for 70, 80, 90, 100, and 110 minutes at 70, 80, 90, 100, and 110°C. The highest glucomannan concentration of 39.60% was obtained at a hydrolysis temperature of 100°C for 100 minutes. The analysis of the FTIR spectrophotometer show

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13

Tester, Richard, and Farage Al-Ghazzewi. "Glucomannans and nutrition." Food Hydrocolloids 68 (July 2017): 246–54. http://dx.doi.org/10.1016/j.foodhyd.2016.05.017.

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14

Nguyen, An Tien, Nguyen Thi Hoa, Do Truong Thien, Vu Thi Hue, Vu Thi Minh Thu, and Lai Thi Thu Trang. "CHARACTERIZATION OF GLUCOMANNAN FROM AMORPHOPHALLUS PANOMENSIS IN VIETNAM." Vietnam Journal of Science and Technology 54, no. 2 (2016): 224. http://dx.doi.org/10.15625/0866-708x/54/2/6384.

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A glucomannan has been isolated from the tuber of amorphophallus panomensis by a simple method without using toxic chemicals. The weight content of the glucomannan was about 4% of original amorphophallus tuber. The structure of the glucomannan was investigated by infrared (IR) and nuclear magnetic resonance spectroscopy (NMR). The results showed that the structural component of the glucomannan was consisted of mannose and glucose units with the mannose/glucose ratio was about 1.00/0.13. The degree of crystalation and molecular weight of the glucomannan were also investigated by XRD diffraction

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15

Rizoputra, Ivan, Sriati Wahyudi, Niniek Fajar Puspita, Darminto Darminto, and Risdiana Risdiana. "Characterization of Glucomannan and Ca-Oxalate from Porang Flour (<i>Amorphophallus muelleri </i>Blume) as Candidates for Hydrogel Materials." Applied Mechanics and Materials 915 (August 18, 2023): 17–23. http://dx.doi.org/10.4028/p-f4xmyx.

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Porang (Amorphophallus muelleri Blume), a plant belonging to the Araceae family, has the main content of glucomannan and calcium oxalate which is quite high. This study aims to determine the characteristic values of glucomannan and calcium oxalate content from porang flour so that it can be used for various applications, especially hydrogel. The characteristics of glucomannan obtained from porang flour will be compared with commercial glucomannan from konjac using 3,5-DNS analysis, permanganate titration method, Fourier Transforms Infrared spectroscopy (FTIR), and Scanning Electron Microscop

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16

&NA;. "Glucomannan." Reactions Weekly &NA;, no. 1146-1147 (2007): 17. http://dx.doi.org/10.2165/00128415-200711460-00051.

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&NA;. "Glucomannan." Reactions Weekly &NA;, no. 1042 (2005): 11. http://dx.doi.org/10.2165/00128415-200510420-00028.

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18

Wardhani, Dyah Hesti, Lucia H. Rahayu, Heri Cahyono, and Hana L. Ulya. "Purification of Glucomannan of Porang (Amorphophallus oncophyllus) Flour using Combination of Isopropyl Alcohol and Ultrasound-Assisted Extraction." Reaktor 20, no. 4 (2020): 203–9. http://dx.doi.org/10.14710/reaktor.20.4.203-209.

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Porang tuber is rich of glucomannan content but contained irritable compounds to be consumed. Ultrasound-assisted extraction (UAE) using isoprophyl alcohol (IPA) was developed as a purification method for glucomannan. This study aimed to determine the effects of UAE conditions (IPA concentrations, ratios of solvent-solid, and number of extraction stages) on the characteristics of purified glucomannan (PG) from porang flour (PF). Single-stage UAE using 80% IPA concentration and ratio of solvent-solid of 8:1 (ml/g) for 10 min gave the highest glucomannan content (76.10%). At this condition, the

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19

Nurlela, N., N. Ariesta, E. Santosa, and T. Mulandri. "Physicochemical properties of glucomannan isolated from fresh tubers of Amorphophallus muelleri Blume by a multilevel extraction method." Food Research 6, no. 4 (2022): 345–53. http://dx.doi.org/10.26656/fr.2017.6(4).580.

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Post-harvest treatment of Amorphophallus muelleri Blume (porang) tubers carried out by Indonesian farmers is slicing tubers into chips, drying, exporting, or processing them to a porang flour before export. To increase the economic value of porang tuber, it can be directly extracted to obtain glucomannan. Glucomannan is a polysaccharide that has many benefits. This work investigated the simple extraction method to produce high purity of glucomannan from fresh porang tubers and study the physicochemical properties of glucomannan. Sliced porang tuber repeatedly (three times) extracted by 60% eth

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20

Nurlela, Nurlela, Nina Ariesta, Dwi Sutari Laksono, Edi Santosa, and Tjahja Muhandri. "Characterization of Glucomannan Extracted from Fresh Porang Tubers Using Ethanol Technical Grade." Molekul 16, no. 1 (2021): 1. http://dx.doi.org/10.20884/1.jm.2021.16.1.632.

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Glucomannan is a polysaccharide consisting of β-1.4-linked D-mannose and D-glucose monomers, which have many benefits especially in the food and pharmaceutical industry. It has been widely reported that one of the main sources of glucomannan is porang tuber (Amorphophallus muelleri Blume). Generally, glucomannan extracted or purified from porang flour. However, the drying process causes other compounds than glucomannan stick strongly, resulting low levels of glucomannan. This study was to obtain glucomannan extract in an easy, effective, and inexpensive method, by direct extraction from fresh

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21

Wan, Jun Mei, and Ming Zhang Ao. "Experimental Study of Biological Material Preparation Based on Optical and Mechanical Dynamics." Applied Mechanics and Materials 556-562 (May 2014): 366–70. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.366.

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The main components of Konjac glucomannan are glucose and glucomannan that are byڂ1-4 bond [ molar ratio is 1.6: (1~4) ] of high molecular weight non-ionic glucomannan, special glucose and mannose's ڂ-1-4chain structure isn't affected by the human digestive enzymes, and does not generate heat. According to the peculiar properties of konjac glucomannan, through the scientific experiment in the body of a rabbit to verify its unique immunological function, and then the human experiments after the effective experimental data statistics scientific analysis, finally the system can obtain the effect

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22

Ahmadi, Nioosha, Hamid Reza Jahantigh, Hassan Noorbazargan, Mohammad Hossein Yazdi, and Mehdi Mahdavi. "Glucomannan as a Dietary Supplement for Treatment of Breast Cancer in a Mouse Model." Vaccines 10, no. 10 (2022): 1746. http://dx.doi.org/10.3390/vaccines10101746.

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Konjac glucomannan (KGM) is a water-soluble polysaccharide derived from the Amorphophallus’s tuber and, as herbal medicine has shown, can suppress tumor growth or improve health. However, there has been no investigation into the effects of KGM on breast tumor-bearing mice. Therefore, in two cohort experiments, we assessed the effect of glucomannan at daily doses of 2 and 4 mg for 28 days as a dietary supplement and also glucomannan in combination with tumor lysate vaccine as an adjuvant. Tumor volume was monitored twice weekly. In addition, TNF-α cytokines and granzyme B (Gr–B) release were me

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23

Busron, Busroni, Anggoro Wicaksono, Moh Irfan Efendi, et al. "PREPARATION AND CHARACTERIZATION OF NOVEL ES-PANI/GLUCOMANNAN COMPOSITE: STUDY OF CONDUCTIVITY." International Journal of Advanced Research 10, no. 12 (2022): 299–309. http://dx.doi.org/10.21474/ijar01/15840.

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The synthesized of emeraldine-salt-polyaniline composites were synthesized using in situ chemical polymerization to form the ES-PANI-glucomannan composites and the ES-PANI-cellulose composites using the batch, and spray method. Polyaniline can be composed of glucomannan and cellulose matrics because they are abundant, cheap, and environmentally friendly. The Ammonium peroxodisulfate (APS) is used as an initiator for the process of oxidative polymerization of aniline and using HCl and HCOOH doping. Characterization of ES-PANI-Glucomannan and ES-PANI-Cellulose composites using FT-IR and conducti

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Sharma, Sonia, and Neeraj Wadhwa. "Application of Glucomannan." Journal of Pharmaceutical Research 21, no. 1 (2022): 1–5. http://dx.doi.org/10.18579/jopcr/v21i1.glucomannan.

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Glucomannan (GM) a water-soluble polysaccharide possesses mannose residues which are extracted from tubers, bulbs, softwoods and roots of many plants. Glucomannan is considered to be a dietary fibre which is actually present in some plant species in the form of hemicelluloses component in the cell wall. Its structure consists of linear chain of mixed residues of α-1,4 linked D-mannose and D-glucose monomers arranged in blocks. The molecular weight of native GM lies between 1×104– 2×106. Low molecular weight GM could be obtained by de-polymerization technique. The average molecular weight of Ko

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25

Harmayani, Eni. "Goat Milk Kefir Supplemented with Porang Glucomannan Improves Lipid Profile and Haematological Parameter in Rat Fed High Fat and High Fructose Diet." Romanian Journal of Diabetes Nutrition and Metabolic Diseases 25, no. 1 (2018): 11–21. http://dx.doi.org/10.2478/rjdnmd-2018-0002.

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AbstractBackground and Aims: Diet with a high fat and high sugar is associated with an increased incindence of the metabolic syndrome. Kefir has been known as a natural probiotic, while glucomannan from porang (Amorphophallus oncophyllus) tuber was demonstrated as prebiotic in vivo. Probiotics and prebiotics can be used adjuvant nutritional therapy for metabolic syndrome. The aim of this study was to evaluate the effect of goat milk kefir supplemented with porang glucomannan on the lipid profile and haematological parameters in rats fed with a high-fat/high-fructose (HFHF) diet.Materials and m

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Tester, Richard, and Farage H. Al-Ghazzewi. "Role of Glucomannans in Immunology." Journal of Pharmacy & Pharmaceutical Sciences 20 (May 10, 2017): 97. http://dx.doi.org/10.18433/j31p52.

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Glucomannans play a much broader role in human health then providing dietary fibre. They are biologically active molecules and can when added to the body imitate innate molecules found in different organs including surface carbohydrates on cells. This review considers the immunological role of exogenous glucomannans within animals and man. This article is open to POST-PUBLICATION REVIEW. Registered readers (see “For Readers”) may comment by clicking on ABSTRACT on the issue’s contents page.

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Jiang, Lei, Qiuxian Chen, Jia Liu, Zhongjie Zhu, and Wei Shao. "Antibacterial performance of Berberine loaded carrageenan/konjac glucomannan hydrogels." Materials Express 11, no. 9 (2021): 1516–22. http://dx.doi.org/10.1166/mex.2021.2049.

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Carrageenan and konjac glucomannan are non-toxic polysaccharides which have been widely applied in the biomedical fields. Berberine as the antibacterial agent was successfully loaded into carrageenan/konjac glucomannan hydrogels. The Berberine loaded carrageenan/konjac glucomannan dried hydrogels display three-dimensional network structure, good swelling behavior and high porosity. These dried hydrogels also show controlled release behavior of Berberine. A good antibacterial effect towards S. aureus and C. albicans with good cell compatibility is exhibited. Thus, the fabricated Berberine loade

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Maretta, Delvi, Is Helianti, Edi Santosa, Ridwan Diaguna, Purwono Purwono, and Sobir Sobir. "Glucomannan Content Stability of Eddoe Taro Tuber based on Parametric, Non-Parametric, and Ammi Analysis." Sains Malaysiana 52, no. 11 (2023): 3135–45. http://dx.doi.org/10.17576/jsm-2023-5211-09.

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The consumption of taro tuber as an energy source is widespread due to its composition of complex carbohydrates, including starch and non-starch polysaccharides. Glucomannan is one of the non-starch polysaccharides found in taro tuber and has been shown to be a dietary fiber with positive effects on health and beauty. The development of new varieties of taro tuber with high glucomannan content is challenging and requires significant effort in order to produce high-quality food. Therefore, this study aimed to investigate the stability of glucomannan content among 14 eddoe taro tuber genotypes u

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Setiawati, Elis, Syaiful Bahri, and Abd Rahman Razak. "EKSTRAKSI GLUKOMANAN DARI UMBI PORANG (Amorphophallus paeniifolius (Dennst.) Nicolson)." KOVALEN 3, no. 3 (2017): 234. http://dx.doi.org/10.22487/j24775398.2017.v3.i3.9332.

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This study aims to determine the temperature and the ratio of tuber flour porang using isopropyl alcohol precipitator in producing glucomannan extract with the highest yield. The study was designed using completely randomized design (CRD), which consists of two factors: the temperature of the extraction consists of seven levels (45, 55, 65, 75, 85, 95, and 105 0C) and the ratio of tuber flour porang by precipitating isopropyl alcohol consists of 5 level (1: 7, 1:10, 1:13, 1:16, and 1:19 (w/v). each done in duplicate. parameters measured were yield characteristics glucomannan and the results sh

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Vân, Phạm Thị Hà Vân, Nguyễn Thị Hiếu Trang та Phạm Quang Thắng. "Khảo sát ảnh hưởng của các họ củ nưa và nhiệt độ bảo quản đến hàm lượng glucomannan trồng tại một số tỉnh miền Nam và Tây Nguyên". Tạp chí Khoa học 14, № 12 (2019): 161. http://dx.doi.org/10.54607/hcmue.js.14.12.315(2017).

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Đánh giá ảnh hưởng của các họ củ nưa đến hàm lượng glucomannan trồng tại một số tỉnh miền Nam và Tây Nguyên. Glucomannan trong mẫu củ nưa thuộc chi Amorphophallus, họ Ráy Araceae ở Vũng Tàu là 7,58 ± 0,56%; 9,94 ± 0,61%; Đắk Lắk là 7,17 ± 0,89%. Ở Trà Vinh, Bến Tre củ nưa thuộc chi Tacca, họ Râu hùm Taccaceae không chứa glucomannan. Củ nưa được lưu trữ ở các chế độ nhiệt độ khác nhau. Trong quá trình bảo quản hàm lượng glucomannan giảm dần, độ hao hụt khối lượng tăng dần theo thời gian.

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Sur, Emrah, Hasan Hüseyin Dönmez, Murat Boydak, and Mehmet Bozkurt Ataman. "Effects of Glucomannan on the Sacculus Rotundus and Peripheral Blood Lymphocytes in New Zealand Rabbits during Aflatoxicosis." Scientific World Journal 2012 (2012): 1–5. http://dx.doi.org/10.1100/2012/632945.

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This study was aimed to determine the effects of the glucomannan added to aflatoxin- (AF-) contaminated diet on the sacculus rotundus and peripheral blood lymphocytes of New Zealand rabbits by histological and enzyme histochemical methods. Twenty-four adult rabbits of both sexes were divided into four equal groups, namely, as control, glucomannan 0.2 g/day, AF 125 μg/kg/day, and glucomannan combined with AF. The animals in all groups were treated for 12 weeks by the above-mentioned diet. When compared to control, AF-treatment caused significant decrease in alpha-naphthyl acetate esterase- (ANA

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Warkoyo, I. Purnomo, D. D. Siskawardani, and A. Husna. "The effect of konjac glucomannan and Aloe vera gel concentration on physical and mechanical properties of edible film." Food Research 6, no. 3 (2022): 298–305. http://dx.doi.org/10.26656/fr.2017.6(3).415.

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Glucomannan from konjac can be used as an ingredient for edible films. However, the use of glucomannan as an edible film has a high water vapour transmission rate and water solubility. Aloe vera is known to have the ability to reduce water vapour transmission and solubility, thus, it is suitable to improve these properties of glucomannan edible film. The purpose of this study was to determine the effect, interaction, and best treatment between three levels of glucomannan flour concentration (1%, 1.3%, 1.6%) and the addition of Aloe vera gel (0%, 5%, 10%) on the physical (thickness, water-solub

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Cuña, M., M. Alonso-Sande, C. Remuñán-López, J. P. Pivel, J. L. Alonso-Lebrero, and M. J. Alonso. "Development of Phosphorylated Glucomannan-Coated Chitosan Nanoparticles as Nanocarriers for Protein Delivery." Journal of Nanoscience and Nanotechnology 6, no. 9 (2006): 2887–95. http://dx.doi.org/10.1166/jnn.2006.435.

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The aim of the present work was to develop a new nanoparticle carrier, adapted for the oral administration of proteins and their delivery to the immune system. Chitosan and phosphorylated glucomannan were chosen as major constituents of the nanoparticles. Chitosan nanoparticles were formed by ionic gelation and then coated with glucomannan. Two different protocols were adopted for the formation of the glucomannan coating: protocol I, in which chitosan nanoparticles were isolated before their coating; protocol II, in which chitosan nanoparticles were not isolated, but coated with glucomannan in

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Wardhani, Dyah H., Fatiha N. Etnanta, Hana N. Ulya, and Nita Aryanti. "Iron Encapsulation by Deacetylated Glucomannan as an Excipient Using the Gelation Method: Characteristics and Controlled Release." Food Technology and Biotechnology 60, no. 1 (2021): 41–51. http://dx.doi.org/10.17113/ftb.60.01.22.7130.

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Research background. Deacetylation and the use of CaCl2 as a gelation agent improve the performance of glucomannan as iron encapsulant. This study was conducted to investigate the effects of deacetylation degree and pH of gelation on the characteristics of encapsulated iron using gelation in CaCl2 solution. Experimental approach. Glucomannan was deacetylated at various NaOH concentrations and was subsequently utilized as an iron excipient using the pipette-dropped gelation method in CaCl2 solution to directly investigate the process of encapsulation by gelation. The pH of the gelation solution

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Hasnanuha Ulayya, Amira, Ahmad Zaki Mubarok, Widodo Widodo, Simon Bambang Widjanarko, and Marlita Eklesia. "Glucohealth: The potential of porang (Amorphophallus muelleri) acid hydrolysed glucomannan as an inhibitor of SARS-CoV-2 interaction with ACE2." Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering 4, no. 2 (2021): 144–52. http://dx.doi.org/10.21776/ub.afssaae.2021.004.02.8.

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The novel SARS-CoV-2 that causing global pandemic COVID-19 known to enter the host cell using the hACE2 as cell receptor. SARS-CoV S1 protein cleaves the ACE2 receptor, then the S2 subunits facilitates the cell membrane fusion, the inhibition of S1-ACE2 interaction can help develop anti SARS-CoV-2 medication. Porang glucomannan is a polysaccharide known as immunomodulator but never reported as anti-virus by direct inhibition of viral entry. Glucohealth was developed to investigate its potential. Method: Glucohealth is a glucomannan hydrolysate (HGM) that made from porang (Amorphophallus muelle

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Nguyen Hong, Trang, and Hoai Nguyen Thị. "STABILITY STUDIES OF GRANULES FOR ORAL SUSPENSION CONTAINING GLUCOMANNAN FROM AMORPHOPHALLUS PAEONIIFOLIUS (ARACEAE) IN THUA THIEN HUE PROVINCE." Volume 8 Issue 4 8, no. 4 (2018): 102–7. http://dx.doi.org/10.34071/jmp.2018.4.15.

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Background: Our experiment based on the research and the choice optimal fomula containing insoluble component Glucomannan extracted from Amorphophallus paeoniifolius species. The aim of this study was to evaluate the stability of granules for oral suspension containing Glucomannan. Materials and method: The products were stored in sealed aluminium package at room condition (250C, RH 60% - 75%) for 6 months or at accelerated condition (40 ± 20C, RH 75 ± 5%) for 4 months. After storing, evaluating the physico-chemical characteristics of granules for oral suspension containing Glucomannan such as

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Ihsan, Fikratul, Anna Anggraini, and Hanifah Ulfa Azzahro. "EKSTRAKSI GLUKOMANAN DARI TEPUNG PORANG (Amorphophallus oncophyllus) DENGAN KOMBINASI PERLAKUAN WAKTU EKSTRAKSI DAN ANTI-SOLVENT." JURNAL TEKNOLOGI PERTANIAN 12, no. 2 (2023): 99–108. http://dx.doi.org/10.32520/jtp.v12i2.2842.

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Exports of porang tubers form glucomannan are more economically valuable than form of chips. Glucomannan is a water-soluble fiber that can be extracted using polar solvents and precipitated using non-polar anti-solvents. Selecting the best extraction time and using the anti-solvent ratio could increased the yield of glucomannan. The used of anti-solvent Isopropyl alcohol (IPA) had a lower dielectric constant compared to ethanol, so it is more non-polar. An aim of this research was to obtain the best yield from a combination of extraction time treatment and the ratio of IPA as anti-solvent. The

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Meissonnier, G., I. Raymond, J. Laffitte, et al. "Dietary glucomannan improves the vaccinal response in pigs exposed to aflatoxin B1 or T-2 toxin." World Mycotoxin Journal 2, no. 2 (2009): 161–72. http://dx.doi.org/10.3920/wmj2008.1127.

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The aim of the study was to investigate whether dietary supplementation with yeast-derived glucomannan protects pigs against the deleterious effects that exposure to aflatoxin B1 (AFB1) or T-2 toxin has on the vaccinal immune response and drug-metabolising enzymes. Three doses of pure mycotoxin (AFB1 trial: 482, 968 and 1,912 µg/kg feed; T-2 toxin trial: 593, 1,155 and 2,067 µg/kg feed) with or without dietary glucomannan supplementation (2 g/ kg feed) were tested in weaned pigs for 28 days. At days 4 and 15 pigs were immunised with ovalbumin to study the humoral and cell-mediated antigen-spec

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Yunita, Triana, Dharmawan Yudha Rizky, Utami Putri Rahajeng, and Kurniawan Fredy. "Glucomanan Extract From Salak Seed (Salacca edulis Reinw.) As An Alternative Material of Making Hard Capsule Shell." SPECTA Journal of Technology 2, no. 1 (2019): 37–42. http://dx.doi.org/10.35718/specta.v2i1.93.

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This research studied about making hard capsule shell using glucomannan extract from salak seed (Salacca edulis Reinw.). The glucomannan extracted by using etanol 96% and aqua dm. The glucomannan that had been extracted will became KGM polymer that will be used for casting the hard capsule shell using petri cup. The results obtained by smashing the seeds of salak to be smooth with meat grinder and glucomannan extraction using 2 methods with etanol 96% and isopropyl alcohol. After extracting the seeds of salak seeds, the bacon seed flour is weighed and taken some samples to obtain the best comp

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Cui, Tingting, Rui Liu, Tao Wu, Wenjie Sui, and Min Zhang. "Influence of Konjac Glucomannan and Frozen Storage on Rheological and Tensile Properties of Frozen Dough." Polymers 11, no. 5 (2019): 794. http://dx.doi.org/10.3390/polym11050794.

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The impact of various amounts of konjac glucomannan on the structural and physicochemical properties of gluten proteins/dough at different periods of frozen storage is evaluated in the present study. As frozen storage time was prolonged, the molecular weight and the free sulfhydryl content of gluten proteins and the tensile properties of frozen dough all decreased. The addition of konjac glucomannan reduced the variations in the structural and rheological properties of gluten proteins/dough. Frozen dough with 2.5% added konjac glucomannan showed the highest water binding capacity and retarded

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Han, Hui Min, Chi Zhang, Jing Xu, Peng Qu, Ye Zhou, and Jing Wang. "Synthesis of Konjac Glucomannan-Graft-Methacrylic Acid Copolymer." Advanced Materials Research 554-556 (July 2012): 307–10. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.307.

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Konjac glucomannan is a kind of natural polysaccharides with excellent biocompatibility and biodegradable activities. In this paper, a series of Konjac glucomannan-graft-methacrylic acid copolymers were prepared by the free-radical initiation grafting Konjac Glucomannan (KGM) with methacrylic acid(MA). The reaction conditions such as reaction temperature, KGM and MA ratio and initiator concentration, were investigated, and chemistry of KGM and its MA grafted copolymers were characterized using FTIR.

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Manuhara, Godras Jati, Setyaningrum Ariviani, and Dwi Ishartani. "Pengaruh Substitusi Terigu dengan Tepung Komposit Tapioka dan Glukomanan-Karaginan Terhadap Kadar Serat Kasar dan Sifat Sensori Mie Basah." Caraka Tani: Journal of Sustainable Agriculture 22, no. 2 (2018): 61. http://dx.doi.org/10.20961/carakatani.v22i2.20564.

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Composite fluor was made from combination of tapiocca and glucomannan-carrageenan in four different composition. The composite fluor for wheat in producing wet noodle. Amylose content of tapiocca provide strong structure of wet noodle, while combination of carrageenan-glucomannan objected to substitute gluten function in building elastic bonding needed in the wet noodle. Increasing of the composite fluor level increased raaw fiber content of wet noodle. Based on sensory analysis, substitution of wheat by the composite fluor decreased intensity of brightness, hardness, unique taste and aroma of

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Tanjung, Kevin. "PERENCANAAN BISNIS INDUSTRI TEPUNG GLUKOMANAN PORANG (Amorphophallus oncophyllus)." Agroindustrial Technology Journal 6, no. 2 (2022): 78–91. http://dx.doi.org/10.21111/atj.v6i2.8452.

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Cultivation and production of porang tubers is growing but most of the results are exports while with abundant production it can be used alone to make glucomannan flour. The production of glucomannan flour in Indonesia is currently still in the development stage and most of it is still on a laboratory scale, to develop porang agriculture and glucomannan flour is to increase the scale of production to be larger. This study aims to analyze whether the glucomannan flour industry is technically, financially and marketing feasible if it is established in Indonesia. The results showed that from a te

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Qi, Luyan, Yan Shi, Cong Li, et al. "Glucomannan in Dendrobium catenatum: Bioactivities, Biosynthesis and Perspective." Genes 13, no. 11 (2022): 1957. http://dx.doi.org/10.3390/genes13111957.

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Dendrobium catenatum is a classical and precious dual-use plant for both medicine and food in China. It was first recorded in Shen Nong’s Herbal Classic, and has the traditional functions of nourishing yin, antipyresis, tonifying the stomach, and promoting fluid production. The stem is its medicinal part and is rich in active polysaccharide glucomannan. As an excellent dietary fiber, glucomannan has been experimentally confirmed to be involved in anti-cancer, enhancing immunity, lowering blood sugar and blood lipids, etc. Here, the status quo of the D. catenatum industry, the structure, bioact

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Sareu, Pratiwi Listyana, Nurhaeni, Ahmad Ridhay, Moh Mirzan, and Syamsuddin. "Ekstraksi Glukomanan dari Umbi Gembili (Dioscorea esculenta L.)." KOVALEN: Jurnal Riset Kimia 7, no. 1 (2021): 51–58. http://dx.doi.org/10.22487/kovalen.2021.v7.i1.12008.

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Gembili bulbs (Dioscorea esculenta L.) have a fairly high carbohydrate content, so they can potentially be a new source of glucomannan compounds. This study aims to determine the yield and glucomannan characteristics of Gembili bulbs at different extraction times and temperatures. Glucomannan was obtained by extraction with water at temperatures of 45, 60, 75, 90, and 105oC for 45, 60, 75, 90, and 105 minutes, and precipitated with isopropyl alcohol. The results showed that the highest yield was obtained at the extraction time of 90 minutes and a temperature of 105oC of 53.09%. The glucomannan

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Hikmat, Hikmat, Renta Resdiana, and Aprilia Nur Tasfiyati. "Carboxymethyl Glucomannan from Amorphophallus oncophyllus as an Alternative Heavy Metal Removal from Wastewater: Adsorption of Cadmium and Zinc." Molekul 16, no. 1 (2021): 57. http://dx.doi.org/10.20884/1.jm.2021.16.1.682.

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Carboxymethyl glucomannan (CMGM) was successfully synthesized through the reaction of glucomannan from Amorphophallus oncophyllus and monochloroacetic acid, using NaOH as a catalyst. Two types of glucomannan were used in this study, low viscosity glucomannan (LGM) and high viscosity glucomannan (HGM). The produced CMGM were differentiated into LCMGM (synthesized from LGM) and HCMGM (synthesized from HGM). The CMGM structure was characterized by FTIR, and the degree of substitution (DS) was determined using back titration method. The DS value were 0.484 and 0.412 for LCMGM and HCMGM, respective

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Nurlatifah, Ismi, and Mutia Amyranti. "The Utilization from Glucomannan of Porang Flour (Amorphophallus Muelleri Blume) as a Raw Material for Making an Edible Film." BERKALA SAINSTEK 11, no. 3 (2023): 138. http://dx.doi.org/10.19184/bst.v11i3.38122.

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Porang (Amorphophallus Muelleri Blume) is a type of tuber that contains various nutrients, especially glucomannan. Besides as being a source of food, the high content of glucomannan can also be used as an alternative for making edible films, because it contains mannan polymers which have the ability to form fine and crystallized fibers. The purpose of this research is to determine the potential of glucomannan in porang tuber flour as a basis for making edible films. Glucomannan used with various variations (3, 6 and 9 grams). The first stages used were testing porang tuber flour and then made

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Figaliah, Feronika Mei, Abdul Manab, and Manik Eirry Sawitri. "Characteristics of Bioplastics with Addition of Beeswax and Glucomannan." BIO Web of Conferences 88 (2024): 00021. http://dx.doi.org/10.1051/bioconf/20248800021.

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Packaging for cheese products usually uses plastic with a polymer base. Plastic is divided into two types: plastic made from synthetic polymer raw materials (difficult to decompose) and plastic made from natural polymer raw materials. The impact of using plastic with synthetic polymer materials, or what is usually called commercial plastic, will cause a buildup of waste and result in environmental pollution, so a solution for packaging using bioplastic is needed. This research was conducted to determine the characteristics of bioplastics with the addition of beeswax and glucomannan. By examini

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Zhang, Liu-Jing, Xiao-Jun Huang, Xiao-Dan Shi, Hai-Hong Chen, Steve W. Cui, and Shao-Ping Nie. "Protective effect of three glucomannans from different plants against DSS induced colitis in female BALB/c mice." Food & Function 10, no. 4 (2019): 1928–39. http://dx.doi.org/10.1039/c8fo02305k.

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Duchesne, I., K. Takabe, and G. Daniel. "Ultrastructural Localisation of Glucomannan in Kraft Pulp Fibres." Holzforschung 57, no. 1 (2003): 62–68. http://dx.doi.org/10.1515/hf.2003.010.

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Summary The localisation of glucomannan on the surface of Norway spruce kraft pulp fibres with varying glucomannan (GM) contents (10.3 and 3.8%) was studied using immunogold labelling, rapid freeze deep etching (RFDE) followed by metal replication and transmission electron microscopy (TEM). The ultrastructure of P, S1 and S2 of pulp fibres with low hemicellulose content tended to be more compact than that of pulp fibres with high hemicellulose content, suggesting aggregation of cellulose microfibrils upon hemicellulose removal. The degree of immunogold labelling visualised as globular structur

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