Effects of gum arabic and pectin on the emulsification, the lipase reaction, and the plasma cholesterol level in rats.

Koseki, Masamichi; Tsuji, Kiichiro; Nakagawa, Yasue; Kawamura, Mitsuo; Ichikawa, Tomio; Kazama, Masayoshi; Kitabatake, Naofumi; Doi, Etsushiro

doi:10.1271/bbb1961.53.3127

Cited by 16 publications

(8 citation statements)

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“…It is thus possible that the butyrate content in the cecum was also involved in the reduction of the serum TG content in the HK group, partly by suppressing absorption of fat in this study. Moreover, it is reported that some dietary fibers affected lipase activities by the change of emulsion stability in vivo and in vitro (16,18). This effect of dietary fibers is possibly associated with absorption of TG in this study.…”

Section: Discussionsupporting

confidence: 53%

“…These data may support the idea that more IDPS exists in BM and HK pulps than in the ␣-corn starch in the control diet, and might be involved in the excretion of the bile acids. It is suggested that suppression of micellar solubility of cholesterol or micelle formation lead to a decrease in serum cholesterol by some elements of foods such as soy protein peptic hydrolysate (17) and pectin (18). Interaction between the indigestive fraction derived from potato pulps and micelle formation is possibly involved in excretion of the bile acid.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, a putative role of SCFA in lowering cholesterol by fibers has been reported ( 13 ), and is probably related to inhibition of metabolism of the major lipogenic precursors such as acetate and lactate ( 14 , 15 ). It has been also reported that some kinds of dietary fiber inhibited formation of micelle or emulsion of bile, which may be resistant to absorption of lipids in part (16)(17)(18).…”

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confidence: 99%

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Potato Pulps Lowered the Serum Cholesterol and Triglyceride Levels in Rats

Hashimoto

Ito

Han

et al. 2006

J Nutr Sci Vitaminol

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SummaryIn our previous study, we demonstrated that retrograded starch, a kind of resistant starch, of beans reduced serum lipid levels in rats. In this study, we examined whether retrograded starch in potato pulps could reduce serum lipid concentrations. Rats were given diets containing 15 g of retrograded starch in potato pulps from the Benimaru potato (BM) or Hokkaikogane potato (HK) in a 100 g diet for 4 wk. At the 4th week, the total cholesterol level in the serum in the BM group and serum triglyceride (TG) level in the HK group were significantly lower than those in the control group. In the BM group, the contents of fecal bile acids were significantly higher than those in the control group. On the other hand, in the HK group, the hepatic mRNA level of fatty acid synthase (FAS) was significantly lower than that in the control group. The FAS mRNA level correlated with the mRNA level of sterol regulatory element-binding protein-1c (SREBP-1c), a regulator of expression of FAS, positively. These results suggested that BM pulp promoted the excretion of bile acids, which resulted in a low concentration of serum cholesterol. On the other hand, HK pulp inhibited the synthesis of fatty acids at the mRNA levels of FAS and SREBP-1c, which might lead to a reduction of the serum TG level.

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Section: Discussionsupporting

confidence: 53%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Potato Pulps Lowered the Serum Cholesterol and Triglyceride Levels in Rats

Hashimoto

Ito

Han

et al. 2006

J Nutr Sci Vitaminol

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“…Furthermore, some polyphenols (e.g., naringenin) decrease the carotenoid uptake by Caco-2 cells . In the same way, diets rich in pectins avoid micelle formation during digestion; the oil emulsion is embedded in a gel-like pectin. , The rheological properties of pectins could increase the viscosity of the duodenal medium and impair the activities of lipase and bile acids. − In humans, clinical studies have highlighted the negative effect on carotenoid bioavailability of diets rich in pectins. , …”

Section: Introductionmentioning

confidence: 99%

Determining Factors of Lipophilic Micronutrient Bioaccessibility in Several Leafy Vegetables

Sriwichai

Berger

Picq

et al. 2016

J. Agric. Food Chem.

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Micronutrient deficiencies are still a public health issue in least developed countries. Promoting diet diversification is a promising strategy. Numerous fruits and vegetables are rich in micronutrients, but some of these compounds are poorly bioaccessible. The objective of this study was to identify the biochemical determinants of the micronutrient bioaccessibility in leaves. The contents in cell walls, pectins, tannins, and proteins of the leafy vegetables were assessed, and correlations with the micronutrient bioaccessibitity were explored. The leafy vegetables have interesting nutritional profiles with noticeable amounts in protein, provitamin A (β-carotene), and α-tocopherol for some species. Their cell wall contents greatly varied from 3.4 to 8.7 g/100 g as well as their pectin percentages. Only the perilla and drumstick leaves contained condensed tannins. In fresh leaves, the contents in bioaccessible carotenoids were low. The correlation study highlighted that the carotenoid bioaccessibility was negatively correlated to the pectin contents of the leaves.

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“…We have reported that the incorporation of lipids into a gel matrix of SDFs 3 ) and the repression of lipase activity by pectin 4 ) were responsible for lowering the plasma cholesterol level in rats. 5 ) Short-chain fatty acids (SCFAs) produced by colonic bacteria are related to the cholesterol level. 6) Dietary fibers are not digested by enzymes in the digestive tract,7) but they are consumed by colonic bacteria.…”

mentioning

confidence: 99%