• Title/Summary/Keyword: insoluble dietary fiber

Search Result 93, Processing Time 0.236 seconds

Seasonal Variation in the Dietary Fiber, Amino Acid and Fatty Acid Contents of Porphyra yezoensis (채취시기별 방사무늬김(Porphyra yezoensis)의 식이섬유, 아미노산 및 지방산 함량 변화)

  • Shin, Dong-Min;An, Se-Ra;In, Seo-Kyoung;Koo, Jae-Geun
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.46 no.4
    • /
    • pp.337-342
    • /
    • 2013
  • Porphyra yezoensis is potentially an excellent source of dietary fiber, amino acids, and eicosapentaenoic acid (EPA) because this red seaweed is available in large quantities and is rich in polysaccharides, proteins, and n-3 fatty acids. This study determined the insoluble dietary fiber (IDF), soluble dietary fiber (SDF), neutral detergent fiber (NDF), acid detergent fiber (ADF), amino acid, and fatty acid contents of P. yezoensis harvested monthly from November 2011 to March 2012. The total dietary fiber (TDF) and IDF contents ranged from 27.2-34.9% and 18.5-26.9%, respectively, and were greater in March than November. The SDF content ranged from 4.9-8.4% and did not differ significantly during growth. Galactose and 3,6-anhydro galactose were the major sugars in IDF and SDF. The higher levels of galactose and 3,6-anhydro galactose in IDF might be due to associated porphyran-type polysaccharides. Mannose and xylose were also major sugars in IDF. The total amino acid contents decreased gradually from November to March. The total amino acid composition of Porphyra was dominated by alanine, glutamic acid, arginine, and aspartic acid. No significant changes in the fatty acid profile were observed throughout the study period. The dominant fatty acid during all seasons was EPA, which comprised as much as 50% of the total fatty acid content.

Effect of Cereals on Lipid Concentration of Liver and Serum the Rats (곡류 급원에 따른 흰쥐의 간과 혈중 지질농도에 관한 연구)

  • 정경아;장유경
    • Journal of Nutrition and Health
    • /
    • v.28 no.1
    • /
    • pp.5-14
    • /
    • 1995
  • The present study was performed to investigate the effect of cereal fiber on lipid concentration of liver and serum in rats. Male Sprague-Dawley rats weighing 180$\pm$4g were divided into five groups by completely randomized block design : R, BR, B, W, and F. Each group fed a diet containing 0.7% cholesterol and a kind of cereal among rice(R), brown rice(BR), barley(B), whole wheat(W), and wheat flour(F) for 5 weeks. The results were summarized as follow : 1) Food intake. weight gain and feed efficiency ratio were not significantly different among the groups. 2) Fecal wet weight and dry weight were significantly higher in W group which fed the most amount of IDF(insoluble dietary fiber). 3) The weight of large intestine was significantly heavier in the W group compared to the others. But the weights of liver, stomach and small intestine were not significantly different among the groups. 4) Total lipid. triglyceride(TG) and total cholesterol(TC) content in liver were significantly different among the groups. The values were the lowest in the B group whose intake of SDF(soluble dietary fiber) was the highest 5) TC content in serum was not significantly different among the groups. TG content in serum was significantly lower in the rest groups than in the R group. HDL-c and free-c content in serum were significantly higher in the B group than in the rest groups. HDL-c/LDL-c, free-c/ester-c ratio were the highest in the B group but not significant. Above results show that the dietary fiber contained in cereals has physiological effects and they are different depending on fractions, IDF and SDF.

  • PDF

Effects of Insoluble Dietary Fiber Supplementation on Performance and Nutrient Digestibility of Weanling Pigs (난용성 식이섬유의 첨가가 이유자돈의 생산성 및 영양소 소화율에 미치는 영향)

  • Han, Y.K.;Han, K.Y.;Lee, J.H.
    • Journal of Animal Science and Technology
    • /
    • v.47 no.4
    • /
    • pp.565-572
    • /
    • 2005
  • An experiment was conducted to determine the effect of supplementation of insoluble dietary fiber (Vitacel®) on growth performance and nutrient digestibility in weanling pigs. A total of 96 pigs that averaged 6.49$\pm$0.52kg BW and 23$\pm$2.1d age were allocated in a randomized block design with two pigs per pen and 12 pens per treatment. Pigs and feeders were weighed 10-days interval for the 40-d trials to determine ADG, ADFI and feed:gain ratio(F:G). Pigs were fed one of four diets:1) Control diet (C) 2) C+0.3% insoluble dietary fiber(IDF) 3) C+0.6% IDF and 4) c+0.9% IDF. For the determination of fecal nutrients digestibility, pigs were fed diets(diet 2) with 1% Celite-545(Fluka) as a marker and feces were collected on $9^{th}$ day and $18^{th}$ day after feeding diet 2. During the whole experimental period, pigs fed diet with 0.3% IDF have significantly higher ADG than other dietary treatment groups(P<0.05). ADG of pigs fed diet with 0.6% IDF was higher than that of pigs fed control diet(P<0.05). However, there was no significant difference in ADG between control group and 0.9% IDF group(P>0.05). ADFI of pigs fed diet with 0.3% IDF was significantly higher than any other dietary treatment groups(P<0.05). There was no significant difference in ADFI among control group, 0.6% and 0.9% IDF supplementation groups (P>0.05). Digestibilities of organic matter, crude protein, crude fiber and energy were significantly higher in 0.3% IDF supplementation group than any other dietary groups. However, there was no difference in over all nutrient digestibilities between 0.6% and 0.9% IDF group. Feeding diets more than 0.6% IDF did not affect the rest of the nutrients digestibilities except for ADF digestibility compared to control diet. Dietary supplementation level of IDF showed a significant quadratic effect on performance improvement of piglets. This response of growth performance to IDF supplementation is, as expected, in agreement with that of nutrient digestibility. Our results showed that IDF supplementation to diet for weaned piglets might be beneficial in terms of growth and nutrient digestibility. However, there should be more study on the relationship between level of IDF supplementation and piglet response as well as the exact mode of action of IDF in weaned piglets.

Function of Dietary Fibers as food ingredients

  • Hwang, Jae-Kwan
    • Journal of Food Hygiene and Safety
    • /
    • v.7 no.4
    • /
    • pp.153-163
    • /
    • 1992
  • Dietary fiber imparts both mutritional and functional properties to foods. This review deals with (1) the classification of dietary fiber, (2) the plant cell wall models, (3) the relations between structure and physicochemical and functional properties of dietary fiber and (4) the applications of dietary fiber in foods. Dietary fiber can be classified in terms of source, plant function, solubility, charge and topology. Plant cell wall models are presented to provide information on the interconnections of dietary fiber components which determines the content of soluble and insoluble dietary fiber content. In reality, physicochemical and functional properties of dietary fiber originate factors such as chemical constituents , charge, branching degree, conformation and etc. Dietary fibers possess a variety of functional properties in food systems, which thus make them useful in food application. In particular, rheology and gelation of water-soluble gums or hydrocolloids are discussed for their effects on food quality. A guideline s also listed for the gum selection to meet the best product requirements.

  • PDF

Removal of Phenthoate Residues During the Preparation of Dietary Fiber and Bioflavonoid from Mandarin Peels (밀감과피의 식이섬유 및 Bioflavonoid 정제 중 Phenthoate 잔류분의 제거)

  • 이서래;권영주;이미경
    • Journal of Food Hygiene and Safety
    • /
    • v.12 no.1
    • /
    • pp.39-46
    • /
    • 1997
  • Mandarin orange fruits were artificially contaminated with an organophosphorus insecticide phenthoate by dipping and the residue level of phenthoate was investigated during the purification steps of dietary fiber or bioflavonoid. The removal rate of phenthoate at 8 and 0.5 ppm levels was 98% in the total dietary fiber, 99% in the insoluble dietary fiber and 99.8% in the soluble dietary fiber preparations. Kuring the preparation of biflavonoid from peels at a 5 ppm pesticide level, the removal rate was 90% in the intermediate extract and 99.9% in the final extract. In conclusion, phenthoate residues in the peels of mandarin orange were mostly removed during the preparation processes of dietary fiber of bioflavonoid and its residue level would not raise any problem in safety aspects of the purified products.

  • PDF

Properties of Dietary Fiber Extract from Rice Bran and Application in Bread-making (미강에서 추출한 식이섬유추출물의 특성 및 제빵에의 응용)

  • Kim, Young-Soo;Ha, Tae-Youl;Lee, Sang-Hyo;Lee, Hyun-Yu
    • Korean Journal of Food Science and Technology
    • /
    • v.29 no.3
    • /
    • pp.502-508
    • /
    • 1997
  • Rice bran dietary fiber extract, which was obtained after termamyl treatment of defatted rice bran contained $27.3{\sim}30.5%$ protein, $49.7{\sim}54.1%$ insoluble dietary fiber, and $1.9{\sim}2.7%$ soluble dietary fiber. Extrusion decreased the insoluble dietary fiber content but increased the soluble dietary fiber content, while roasting did not. Influence those content. Each mineral element content was depended upon heat processing method. Extrusion increased the water binding capacity and L value, while roasting reduced the water binding capacity and L value. Scanning electron microscopy showed damaged cell walls for extruded sample compared to roasted one which had fully collapsed cell walls. The increase of water absorption, developing time, and stability and the of MTI of wheat flour-dietary fiber extract composites with addition of dietary fiber extract were observed by Farinograph. Rice bran dietary fiber extract had an effect on the bread making resulting in increase of bread weight and color of crumb and crust, and decrease of bread volume and texture. As a result of sensory evaluation, appearance, texture, overall acceptability were significantly different from control but flavor and taste were not different significantly up to 6% level. Heat treated samples had differences in mean values, but not significant differences statistically.

  • PDF

Effects of Single Cells of Carrot and Radish on the Fecal Excretion Properties, Mineral Absorption Rate and Structure of Small Intestine and Colon in Rats (당근과 무의 단세포물 섭취가 흰쥐의 배변특성, 무기질 흡수율 및 소장과 대장의 구조에 미치는 영향)

  • 박용곤;강윤한
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.33 no.3
    • /
    • pp.505-511
    • /
    • 2004
  • The effects of single cells of carrot or radish on the fecal excretion, mineral absorption rate and structure of small intestine and colon were investigated in rats fed 5% single cell diet for 4 weeks. Carrot contained 28.76% of total dietary fiber and 21.45% of insoluble dietary fiber, and radish contained 23.14% of total dietary fiber and 16.77% of insoluble dietary fiber on a dry weight basis. Total dietary fiber contents of the single cell were 44.68% for carrot, 48.0% for radish. Absorption rates of magnesium were higher in the carrot and radish single cell groups than the other groups. Cellulose significantly increased fecal weight and weight of small intestine. The consumption of cellulose and single cells decreased digestibility of lipid. The length of colon were longer in the carrot and the radish group than the other groups. Scanning electron microscopy studies showed that small intestine microvilli with leaf-shaped were seen in cellulose and single cell fed groups. These results suggest that the diet containing 5% single cells of carrot or radish increases the digestibility of dietary fiber, weight gain, and fecal output and shorten the gastrointestinal transit time.

Effect of Insoluble Dietary Fiber Extracted from Salicornia herbacea L. on Large Intestinal Function in Rats (불용성 함초 식이섬유의 섭취가 흰쥐 장기능에 미치는 효과)

  • Kim, Soo-Hwan;Kim, Sook-Ja;Lee, Hyeong-Seon
    • Korean Journal of Food Science and Technology
    • /
    • v.46 no.5
    • /
    • pp.648-654
    • /
    • 2014
  • This study investigated the effect of insoluble dietary fibers extracted from Salicornia herbacea L. (S. herbacea) on the improvement of intestinal function in rats. Sprague-Dawley rats were fed on diet containing 5% and 10% S. herbacea dietary fiber (SHDF) for four weeks. Rats receiving the SHDF diet showed a significant decrease in their triglyceride levels and an increase in HDL-cholesterol levels. In addition, compared with the control group, the SHDF group showed a significant increase in the total quantity of the feces and its moisture content. The intestinal transit time of the feces was also shorter in this group. The pH of the feces decreased in all the other experimental groups. Particularly, the bile acid content of the feces and the thicknesses of the mucus layers showed significant recovery on SHDF intake. These results suggest that dietary fiber isolated from S. herbacea has a marked effect on the improvement of bowel function in rats with loperamide (2 mg/kg)-induced constipation.

Quantitative Analysis of Dietary Fibers from Perilla frutescens Seeds and Antimutagenic Effect of Its Extracts (들깨의 식이 섬유소 함량분석과 들깨 추출물의 항돌연변이 효과)

  • 박동숙;이경임;박건영
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.30 no.5
    • /
    • pp.900-905
    • /
    • 2001
  • In this study, the levels of insoluble dietary fiber(IDF) and soluble dietary fiber (SDF) in Perilla frutescens seed were quantified and antimutageinc effects of perilla seeds extracts (method extract, hexane extract, methanol soluble fraction and dietary fiber)was carried out IDF and SDF values of perilla seeds were 16.1% and 1.1% , respectively, with 17.2 of total fiber content. Among the solvent extracts of perilla seeds, methanol extract and methanol soluble fraction (MSF) effectively inhibited the mutagenicity induced by aflatoxin B$_{1}$(AFB$_{1}$)in Salmonella typhimurium TA100, Methanol extract of perilla seeds showed 91% inhibition against AFB$_{1}$ mutagen under the 2.5 mg/assay concentration, and MSF inhibited the mutagenicity of 87% by adding 1.25,g/assay. However, perilla seed extracts showed low inhibition rate on the mutagenicity induced by N-methyl-N-nitro-N-nitosoguanidine(MNNG). And also, SDF and hexane extracts from perilla seeds did not show the antimutagenic effects against AFB$_{1}$ and MNNG. On the hand, IDF extracted from perilla seeds inhibited 21% of mutagenicity induced Trp-P-2 due to the carcinogen binding effect.

  • PDF

Effect of Heat Treatment on In Vitro Hydrolysis Index of Commercial Saengshik (시판 표준 생식의 전분 가수분해지수에 열처리가 미치는 영향)

  • Han, Sung-Hee;Han, Sang-Yoon;Rhee, Chul
    • The Korean Journal of Food And Nutrition
    • /
    • v.21 no.4
    • /
    • pp.470-476
    • /
    • 2008
  • In this study, we assessed the effects of heat treatment on the in vitro hydrolysis indices of commercial Saengshik. Thermal treatment on grain flour and commercial Saengshik increased soluble dietary finer(SDF) and insoluble fiber(IDF), while total dietary fiber(TDF) content remained nearly constant regardless of thermal treatment. Among the samples, COS(Commercial Ohaeng Saengshik) showed the highest TDF and IDF content in raw and heated samples. Additionally, the resistant starch(RS) contents in unheated samples were shown to be high. After heating, the RS levels of all the samples were reduced significantly, by over 12%. The degree of gelatinization in the unheated samples was lower than that of the heated samples, whereas the degree of retrogradation in the unheated samples was higher than that of the heated samples. The hydrolysis indices(HI) of the unheated samples were relatively low, whereas the heated group evidenced high levels. The HI must be affected by content of RS and IDF in samples.