• 대한지역사회영양학회지
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• 제21권3호
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• pp.293-300
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• 2016

Objectives: The purpose of the study was to develop a dietary fiber composition table (DFCT) and to assess dietary fiber intakes in Korea National Health and Nutrition Examination Survey (KNHANES). Methods: The DFCT was developed by compiling the food composition tables published by the agencies of Korea, United States, or Japan. When there was no available data from the same species or status (dried, boiled, etc.) of food, the values were imputed by estimating from the same species with different status or substituting familiar species in biosystematic grouping. Using KNHANES VI-2 (2014) microdata and DFCT, intake of dietary fiber of Koreans was estimated. Results: Among the 5,126 food items of DFCT, the proportion of items of which dietary fiber contents were taken from the analytical values of the same foods was 40.9%. The data from the domestic food composition tables was 37.5%, and the data from the foreign tables was 49.6%. The rest was assumed as zero, or estimated with recipe database and nutrition labeling. Mean daily intake of dietary fiber was 23.2 g, and mean intake per 1,000 kcal was 10.7 g in men and 12.6 g in women. The mean percentage of dietary fiber intake compared to adequate intake was higher than 100%. The major food groups contributing to dietary fiber intakes were vegetables and cereals, and the percent contribution were 32.9% and 23.0% of total dietary fiber intakes, respectively. Conclusions: This DFCT could serve as a useful database for assessing dietary fiber intakes and for investigating the association between dietary fiber intakes and noncommunicable diseases.

• Journal of Nutrition and Health
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• 제41권3호
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• pp.264-282
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• 2008

The present study assessed the relation of dietary fiber to food habits in Korean adults aged 20 and over, using a newly established dietary fiber, as well as the 2001 Korean National Health and Nutrition Survey. The per capita average dietary fiber intake of Koreans was estimated to be 12.25 ${\pm}$ 5.23 g/1,000 kcal. Calorie-based dietary fiber intakes for females was over the KDRl, but for males it was below the KDRI. The levels of total dietary fiber and energy corresponded with frequent snacking but calorie-based dietary fiber intake did not. The subjects who skipped meals, frequently ate out and consumed fried foods tended to have lower levels of calorie-based dietary fiber although the levels of energy and total dietary fiber corresponded with frequent eating-out and consumption of fried foods. The results of this study suggest that Koreans must make efforts to regularly have three meals a day, reduce the frequency of eating out and consume fewer fried foods in order to maintain the optimum intake levels of dietary fiber that protect against chronic diseases.

• Animal Bioscience
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• 제35권7호
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• pp.1048-1058
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• 2022

Objective: The present study was to investigate the extraction conditions of dietary fiber from dried cassava pulp (DCP) and cassava distiller's dried grains (CDG) under different NaOH concentrations, and the Fourier transform infrared (FTIR) was used to determine the dietary fiber components. Methods: The dried samples (DCP and CDG) were treated with various concentrations of NaOH at levels of 2%, 4%, 6%, and 8% using a completely randomized design with 4 replications of each. After extraction, the residual DCP and CDG dietary fiber were dried in a hot air oven at 55℃ to 60℃. Finally, the oven dried extracted dietary fiber was powdered to a particle size of 1 mm. Both extracted dietary fibers were analyzed for their chemical composition and determined by FTIR. Results: The DCP and CDG treated with NaOH linearly or quadratically or cubically (p<0.05) increased the total dietary fiber (TDF) and insoluble fiber (IDF). The optimal conditions for extracting dietary fiber from DCP and CDG were under treatment with 6% and 4% NaOH, respectively, as these conditions yielded the highest TDF and IDF contents. These results were associated with the FTIR spectra integration for a semi-quantitative analysis, which obtained the highest cellulose content in dietary fiber extracted from DCP and CDG with 6% and 4% NaOH solution, respectively. The principal component analysis illustrated clear separation of spectral distribution in cassava pulp extracted dietary fiber (DFCP) and cassava distiller's dried grains extracted dietary fiber (DFCDG) when treated with 6% and 4% NaOH, respectively. Conclusion: The optimal conditions for the extraction of dietary fiber from DCP and CDG were treatment with 6% and 4% NaOH solution, respectively. In addition, FTIR spectroscopy proved itself to be a powerful tool for fiber identification.

• 한국식품조리과학회지
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• 제7권3호
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• pp.69-76
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• 1991

6종류의 식용 버섯에 함유되어 있는 dietary fiber를 Southgate방법, NDF방법, FRI방법으로 측정한 결과는 다음과 같았다. 식용 버섯 중에 함유되어 있는 dietary fiber를 Southgate방법, NDF방법, FRI방법으로 측정한 결과는 각각 $20.08\pm1.45g$/100g dry weight, $20.24\pm1.85g$/100g dry weight, $27.5\pm2.7g$/100g dry weight이었고, 세가지 실험 방법간의 측정치 차이를 보면, 대체로 Southgate방법과 NDF방법과는 유의적인 차이가 없었던 반면, FRI방법과는 유의적인 차이가 크게 나타났다. 버섯중의 dietary fiber성분 비율은 Southgate방법에 의 한 water-soluble fiber성분이 1.7~3.1%, hemicellulose가 47.0~66.6%, cellulose가 28.4~57 7%, lignin 0.9~3.3%였고, NDF방법에 의해 측정한 hemicellulose는 61.8-79.1%, cellulose는 5.4~32.7%, lignin은 4.5~15.5% 였다. 일반적으로 버섯류의 dietary fiber성분은 hemicellulose가 가장 많았고 그 다음으로 cellulose가 많이 함유되어 있었다. Dietary fiber와 crude fiber의 함량비 (DF/CF)는 2~4배 정도로 dietary fiber가 높았다.

• 한국식품과학회지
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• 제29권1호
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• pp.107-114
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• 1997

쥐의 사육실험결과 장내 균총 개선에 유효한 것으로 나타난 사과에 대하여 in vitro 배양실험을 통하여 이들의 유효성을 검증하였다. 사과로부터 분리한 crude pulp (CP), total dietary fiber (TDF), soluble dietary fiber (SDF), insoluble dietary fiber (IDF)와 시약용 사과 펙틴을 구입하여 PYF 액체배지에 첨가한 후 주요 장내 미생물의 표준균주들을 단독배양하여 O.D.와 pH를 측정함으로써 그 이용성을 조사하였다. 또한 이들 배지에 흰쥐의 분변 혼탁액을 종균으로 접종하여 혼합배양한 후 주요 장내 미생물의 균총변화를 조사하였다. 대부분의 장내 세균들이 사과의 IDF 첨가구에서보다 SDF 첨가구에서 더 잘 생육하였으며 특히 Bifidobacterium adolescentis, B. animalis, B. infantis, B. longum, B. thermophilum 등 Bifidus균들은 SDF 첨가구에서 비교적 높은 이용성을 나타냈으나 시약용 펙틴을 첨가한 시험구에서는 실험에 사용된 대부분의 균들이 거의 생육하지 않았다. 그러나 흰쥐의 분변 미생물들을 혼합배양하였을 때 사과의 섬유질 특히 수용성 식이섬유질(SDF)과 펙틴질 첨가구에서 포도당 첨가구에 비하여 Bifidobacterium의 수가 다량 검출되었다.

• Journal of Nutrition and Health
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• 제30권7호
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• pp.848-853
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• 1997

The daily intake of dietary fiber by Korean population in urban and rural areas was computed from an optimized food intake based on national nutrition survey, food balance sheet, and the dietary fiber content of Korean foods. The average intake of dietary fiber the nationwide and in urban and rural areas were 24, 22 and 28g in the 1970's, 20, 21 and 20g in 1980's , and 22, 22 and 21g in the 1990's , respectively. As compared with the recommended dietary allowance of 20-25g for Koreans, the average intake of dietary fiber was within the normal range, regardless of urban and rural areas. Since the dietary pattern of korean people is being changed according to different life style, the exact intakes of dietary fiber by diverse specific population groups should be assessed in the future.

• 한국식품영양과학회지
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• 제25권3호
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• pp.539-549
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• 1996

Large bowel cancer correlates tightly to dietary factors such as dietary fiber and fat. Dietary fiber prevents the large bowel cancer in different modes of action which depend upon physicochemical and fermentable properties. Water-soluble fiber is fermented easily by intestinal microbes producing short chain fatty acids ; in contrast, water-insoluble fiber occurs effectively more rapid transit time due to greater bulk of gut content, though it is unfermentable. Not only short chain fatty acid is utilized in the proximal and distal colon as primary energy source, but also it lowers pH in the colon to normalize cellular differentiation and helps to stimulate peri staltic movement by acting as an osmotic laxative. In particular, butyric acid may also regulate gene expression and cell growth, though it is an important respiratory fuel for the colonocyte. Since dietary fiber and non-digestible oligosaccharides are the major source of butyric acid, this provides a possible link between dietary fiber and oligosaccharide and prevention of large bowel cancer. But, as with many links between dietary fiber and large bowel cancer, a direct casual association has not been established. In addition, RDA of dietary fiber which is 20~25g/day for adult Japanese, appears to be reasonable for the defecation once daily and the prevention of large bowel cancer.

• Nutrition Research and Practice
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• 제18권4호
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• pp.534-543
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• 2024

BACKGROUND/OBJECTIVES: Studies on the impact of dietary fiber intake on kidney stones are few, and their results were controversial. This study aimed to explore the association between dietary fiber intake and kidney stones in the nationally representative population of the USA. SUBJECTS/METHODS: This cross-sectional research included 8,588 participants from the National Health and Nutrition Examination Survey, 2011 to 2018. Information regarding dietary fiber intake was obtained from a 24-h recall survey. Participants were categorized into different dietary fiber intake tertiles according to the average of 2 days of dietary recall data. The outcome was self-reported kidney stones. After adjusting for the traditional risk factors, a multivariate logistic regression model was used to examine the association between dietary fiber intake and kidney stones. RESULTS: Eight hundred seventy-two participants had kidney stones. The weighted prevalence (SE) of kidney stones in the lowest tertile, medium tertile, and highest tertile of dietary fiber intake was 11.8% (0.8%), 10.3% (0.8%), and 9.1% (0.8%), respectively. After adjusting for age, sex, race and ethnicity, education level, smoking status, alcohol consumption, physical activity, body mass index, hypertension, diabetes, dyslipidemia, daily water intake, chronic kidney disease stage 3-5, and total energy intake, participants with the highest tertile of fiber intake had a significantly lower risk of kidney stones (odds ratio [OR], 0.68; 95% confidence interval [CI], 0.48-0.95) compared to those in the lowest tertile. Every 5 g/day increment in dietary fiber intake was associated with a significant decrease in risk of kidney stones (OR, 0.90; 95% CI, 0.83-0.98). CONCLUSION: An increase in dietary fiber intake was associated with a lower risk of kidney stones, suggesting adults should be encouraged to maintain an adequate dietary fiber intake to prevent the development of kidney stones. Our results provide evidence to formulate nutrition management strategies for the prevention of kidney stones.

• Journal of Community Nutrition
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• 제1권1호
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• pp.52-59
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• 1999

The present study was conducted to evaluate the dietary fiber intake of 130 subjects, that included 49 subjects(29 form Wonju, 20 from Kangnung) with diabetes mellitus, 23 hyperlipidemia patients, and 58 normal subjects. After the type and amount of foods that a subject took for one day were investigated using the 24-h recall method, the intake of various nutrients and dietary fiber were calculated using a program that already contained the information on dietary fiber contents. The results showed that diabetics from Kangnung who did not undergo dietary therapy had more fat intake that those from Wonju, hyperlipidemia patients, and normal subjects thus, had more energy intake. Also, the crude fiber intake in male and female diabetics from Kangnung were 8.43${\pm}$3.47g and 3.35${\pm}$3.29g, respectively, showing significantly high amounts compared to those of male and female diabetics from Wonju, hyperlipidemia patients, and normal subjects; however, the intake of crude fiber per 1,000 kcal in males and females was not significantly different among the four groups. Also, the dietary fiber intake(14.8-19.8g/day) and the dietary fiber intake per energy unit(7.7-10.9g/1,000kcal) were not significantly different between the four groups. The dietary fiber intakes of diabetics and hyperlipidemia patients were not significantly different from those in normal subjects, and these amounts were significantly lower than recommended levels. Thus, the methods of increasing dietary fiber intake, such as developing low-calorie, high-dietary fiber foods or additives, needs to be researched.

• Journal of Animal Science and Technology
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• 제62권1호
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• pp.94-102
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• 2020

This study aimed to investigate the possibility of replacing the isolated soy protein (ISP) as a binding agent for wheat, oat, and bamboo shoot dietary fibers. Dietary fibers and ISP were added to manufacturing process of pork emulsion, respectively, for investigate quality properties. Moisture contents of pork emulsion added wheat fiber-treated group was significantly higher than ISP-treated group (p < 0.05), and protein contents of dietary fiber-treated group were significantly lower than ISP-treated group (p < 0.05). Raw pork emulsion CIE a^⁎ value of oat, bamboo shoot fiber-treated group were significantly lower than ISP-treated group (p < 0.05). After cooking pork emulsion CIE L^⁎ value of dietary fiber-treated group were significantly higher than ISP-treated group (p < 0.05). Raw pork emulsion water holding capacity (WHC) of wheat, oat fiber-treated group were significantly higher than ISP-treated group (p < 0.05), and cooked pork emulsion WHC of wheat, bamboo shoot fiber-treated group were higher than ISP-treated group (p < 0.05). Cooking loss of ISP-treated group was significantly higher than dietary fiber-treated group (p < 0.05), and viscosity of ISP-treated group was lower than dietary fiber-treated group. Hardness of ISP-treated group was significantly lower than dietary fiber-treated group (p < 0.05); however, cohesiveness of ISP-treated group was significantly higher than dietary fiber-treated group (p < 0.05). In conclusion, dietary fiber added as binding agent to manufacturing process of pork emulsion was suitable to replacing ISP.