Chemical and Rheological Properties of Viscous Polysaccharides from Three Species of Yam (Dioscorea).

Tanoue, Hayao; Simozono, Hidetoshi

doi:10.3136/nskkk1962.38.751

Cited by 3 publications

(5 citation statements)

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“…Jin contains mucin that primarily comprises the soluble dietary fiber (SDF) mannan (2,8). Nishimura et al has reported that Chinese yam contains 1.9% (w/w) of the SDF (31).…”

Section: Jin Blocks Lipid Absorption In the Intestines And Decreases mentioning

confidence: 99%

“…Using a Megazyme Resistant Starch Assay Kit (Megazyme International, Ltd., Wicklow, Ireland), we determined that it also contained 45.4 g of resistant starch in 100 g of 1 Initial body weights were deduced from weights measured in the 6th week after the start of the experiment. 2 Body weights measured in the 6th week were deduced from weights before fasting.…”

Section: Jin Inhibited Body Weight Gain Without Decreasing Skeletal Mmentioning

confidence: 99%

“…Its complexes comprise 53-55% carbohydrate and 2.0-2.3% protein, and differ little between varieties of Dioscoreaceae (2). The molecular structure of these complexes is characterized by protein bound to the main chain of acetylated mannose (2). Moreover, Jin reportedly includes other proteins in addition to the major protein component dioscorin (3), but lacks homology to well-known mannose-binding proteins (4).…”

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confidence: 99%

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confidence: 99%

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Consumption of Japanese Yam Improves Lipid Metabolism in High-Cholesterol Diet-Fed Rats

Kusano

Tsujihara

Masui

et al. 2016

J Nutr Sci Vitaminol

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SummaryWe investigated the effects of dietary Japanese yam (Dioscorea japonica Thunb.) on lipid metabolism. Male Wistar rats (6 wk old) were fed a high-cholesterol diet for 6 wk and then supplemented with 26% of Japanese yam or 0.5% of its constituent diosgenin for a further 4 wk of high-cholesterol feeding (C6-J4 and C6-D4 groups, respectively). In the C6-J4 group, body weight gains significantly decreased, but skeletal muscle fiber sizes in quadriceps significantly increased compared with the other groups. Furthermore, Japanese yam supplementation resulted in the reduction of triglyceride contents in their liver, quadriceps, and intra-abdominal visceral fat. Diosgenin supplementation resulted in an increase in the numbers of skeletal muscle fibers and decrease in the fat accumulations in liver and of the lipid contents in quadriceps. Although quadriceps cholesterol contents decreased concomitantly with increased serum HDL-cholesterol in both the groups, fecal bile acid, fecal cholesterol contents, and fecal weight were higher in the C6-J4 group than in the C6-D4 group. Meanwhile, we demonstrated that Japanese yam inhibited micellar cholesterol solubility in vitro in a concentration-dependent manner. These results suggest that Japanese yam is more effective than diosgenin in reducing fat accumulation and improving cholesterol metabolism during chronic consumption of a high-cholesterol diet.

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“…Jin contains mucin that primarily comprises the soluble dietary fiber (SDF) mannan (2,8). Nishimura et al has reported that Chinese yam contains 1.9% (w/w) of the SDF (31).…”

Section: Jin Blocks Lipid Absorption In the Intestines And Decreases mentioning

confidence: 99%

Section: Jin Inhibited Body Weight Gain Without Decreasing Skeletal Mmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Consumption of Japanese Yam Improves Lipid Metabolism in High-Cholesterol Diet-Fed Rats

Kusano

Tsujihara

Masui

et al. 2016

J Nutr Sci Vitaminol

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“…According to Ohtani and Murakami ( 1991 ), mannan was made of about 90% of mannose and 10% of galactose and glucose. Tanoue and Simozono ( 1991 ) also reported that polysaccharides of yam were mainly mannose and some of arabinose, glucose, and galactose, and very small amount of xylose and rhamnose.…”

Section: Introductionmentioning

confidence: 96%

Effect of mucilage from yam on activation of lymphocytic immune cells

2007

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The immunostimulating activities of mucilage fraction from yam were investigated. The proliferation of BSA-primed lymph node cells was enhanced between 4.1- to 10.9-fold compare to control, when cultured with 1 to 25 µg/mL of yam-mucilage fraction. It showed strong immunopotentiating activity than ginseng extract and as remarkable as Bifidobacterium adolescentis M101-4 known as a positive immunostimulator. Mitogenicity to lymph node cells was fully induced by concanavalin A and lipopolysaccharide. The proliferation of splenocytes and Peyer's patch cells was enhanced between 5.0- to 14.1-fold and 2.4- to 6.4-fold, respectively, when cultured with 1 to 25 µg/mL of yam-mucilage fraction. It enhanced the production of cytokines such as tumor necrosis factor-α and IL-6 in the culture of RAW 264.7 macrophage cells. In the culture of lipopolysaccharide-stimulated RAW 264.7 cells, production of cytokines was as similar as compared to controls. In unstimulated RAW 264.7 cells, both tumor necrosis factor-α and IL-6 production were enhanced between 15.6- to 60.1-fold and 2.3- to 9.1-fold, respectively. Mucilage fraction from yam is expected to be a safe immunopotentiator to maintain the host immunity and develop a physiologically functional food.

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Modified β -CD-Cu ion complex and yam mucilage assisted batch foam fractionation for separating puerarin from Ge-gen ( Radix puerariae )

Liu

Wang

et al. 2017

Separation and Purification Technology

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Chemical and Rheological Properties of Viscous Polysaccharides from Three Species of Yam (Dioscorea).

Cited by 3 publications

References 0 publications

Consumption of Japanese Yam Improves Lipid Metabolism in High-Cholesterol Diet-Fed Rats

Consumption of Japanese Yam Improves Lipid Metabolism in High-Cholesterol Diet-Fed Rats

Effect of mucilage from yam on activation of lymphocytic immune cells

Modified β -CD-Cu ion complex and yam mucilage assisted batch foam fractionation for separating puerarin from Ge-gen ( Radix puerariae )

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