• Title/Summary/Keyword: Food Science and Nutrition

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Effects of Water-soluble and Water-insoluble Fractions of Kimchi on the Alteration of Plasma Lipids and Fibrinolytic Activity in Middle-aged Healthy Subjects

  • Choi, Sun-Hye;Kwon, Myung-Ja;Kim, Mi-Jeong;Kwon, Sun-Jin;Baek, Yeong-Ho;Song, Yeong-Ok
    • Preventive Nutrition and Food Science
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    • v.11 no.3
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    • pp.218-225
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    • 2006
  • Freeze-dried kimchi fractions, water-soluble (WSK) versus water-insoluble (WISK), on their effects on plasma lipids and for their fibrinolytic activities were studied. Nineteen middle-aged healthy subjects were assigned to WSK, WISK, or placebo during 6 weeks of kimchi supplementation. Subjects in the WSK and WISK groups were supplemented with 3 grams of kimchi pills (equivalent to 60 grams of fresh kimchi), while the placebo group was on their normal diets. LDL/HDL and atherogenic index decreased in the subjects who received kimchi pills, but not in those in the placebo group. The levels of plasma triglyceride were significantly decreased in the WSK group compared with those in the WISK group (p<0.05). However, there was no difference in the levels of total cholesterol and HDL between the two groups. Fibrinolytic activity of WISK was significantly higher than that of WSK.

Validity for Classifying the Stages of Change among the Dietary Assessment Methods on Eating Fruits and Vegetables for American College Students

  • Chung, Sang-Jin;Sharon L. Hoerr;Ralph Levine;Won O. Song;Gayle Coleman
    • Journal of Community Nutrition
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    • v.4 no.3
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    • pp.143-150
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    • 2002
  • The objective of this study is to establish outcome validity for three instruments that assess whether subjects met recommendations for daily servings of fruits and vegetables for“Stage of Change”research. A convenience sample of 294 college students was recruited from introductory nutrition classes at Michigan State University in the United States. To measure servings of fruits and vegetables, separately, three types of methods (self-rated intake, 24-hour recall and food frequency) were used in comparison to the servings from a three-day food record, the criterion used. The outcome validity was assessed based on whether or not at least two servings of fruits and three servings of vegetables were reported. Validity was assessed by sensitivity, to measure the ability to detect low intakes, and by specificity, to measure ability to detect adequate intakes. Cohen's kappa was used as well to examine the agreement between the three methods and a three-day food record. The results showed, for fruits, the 24-hour recall had the best agreement (recall 0.54, self-rated : 0.31, food frequency : 0.29) with a three-day food record for servings consumed by people in pre-action or post-action stages. Sensitivity for fruit was also best using a recall (0.81). For vegetables, however, all three methods had low agreement (food frequency : 0.27, recall : 0.21, self-rated : 0.17) with the results of the three-day food record. Self-rated intakes for vegetables had the best sensitivity (0.66) and the food frequency had the best specificity (0.73). Therefore, researcher can use the 24-hour recall method to identify people who consume inadequate servings of fruit. To detect adequate vegetable intake, the food frequency was best of the three methods. Accuracy may be improved by probing for vegetables in mixed dishes and on sandwiches. (J Community Nutrition 4(3): 143∼150, 2002)

Reduced Leptin and Raised Glycerol Secretions in Mouse 3T3-L1 Adipocytes by Garlic-added Kochujang

  • Kong, Chang-Suk;Mun, Ju-Hong;Kim, Su-Ok;Jung, Hye-Kyung;Ahn, In-Sook;Rhee, Sook-Hee;Park, Kun-Young
    • Preventive Nutrition and Food Science
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    • v.11 no.2
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    • pp.110-114
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    • 2006
  • In order to develop the improved kochujang witb an anti-adipogenic effect, garlic-added kochujang was prepared and followed by fermentation at $30^{\circ}C$ for 120 days. Anti-adipogenic effects of the garlic-added kochujang in cultured 3T3-L1 adipocytes were investigated by measuring leptin and glycerol levels as indicators of lipid accumulation associated with lipolysis, respectively. Additional levels of garlic powder in the preparation of kochujang was determined from the result of a sensory evaluation test. Garlic-added kochujang showed the highest points when the added content was 3%. Fermentation of kochujang led to the decreased leptin secretion and increased glycerol release in the 3T3-L1 adipocytes. The addition of garlic to the kochujang also resulted in reduced leptin secretion and induced lipolysis. Since these results suggested that addition of garlic into kochujang can improve the anti-adipogenic effects of kochujang, it might be possible to develop garlic-added kochujang as an antiobesity-functional kochujang.

A Study on the Current Nutrition Labeling Practices for the Processed Foods in Jeonju and Daegu Area (전주와 대구지역 시판 가공식품의 영양 표시 실태 조사)

  • Cha Youn-Soo;Yang Hyang-Sook;Ahan Eun-Mi;Rho Jeong-Ok
    • Journal of the East Asian Society of Dietary Life
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    • v.15 no.4
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    • pp.483-492
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    • 2005
  • The propose of this study was to investigate the status of current nutrition labeling on the packaging of processed foods. The 2432 processed foods purchased at various retail markets in Jeonju and Daegu during June, 2004, were classified by food category according to the 2004 Food Codes and evaluated for the type of nutrition composition labeling and nutritional content claims. The results are summarized as follows: The percentage of processed food products with nutrition labeling was $27.5\%$ and $71.6\%$ of noodles had nutrition composition labeling, which was the largest number among the food category. Various unit of measurements were used in the nutrition labeling of the processed foods, per 100g or 100ml being the most common($51.8\%$) under the currently practiced nutrition labeling. Nutrition claims were made for $9.5\%$ (231 items) of the products. Drinks bad the largest number of nutrition claims of $27.3\%$ The most frequently used technology was 'contained' among the claims ($36.0\%$) and 'added' was the next ($30.7\%$). 'High in calcium' or the equivalent was the most popular nutritional claim Other nutrients for which content claims were made included: lipid, vitamin C, DHA, camitine, taurine etc.

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Physicochemical Properties of Job's Tears (Coix lachryma-jobi L.) Starch Modified with Different Levels of Acid Hydrolysis

  • Kim, Hye-Won;Lee, Kwang-Yeon;Bae, In-Young;Jun, Soo-Jin;Lee, Ji-Yeon;Lee, Hyeon-Gyu
    • Food Science and Biotechnology
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    • v.18 no.5
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    • pp.1145-1149
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    • 2009
  • Physicochemical properties of native and acid-modified Job's tears (Coix lachryma-jobi L.) starches were investigated. Starch extracted from Job's tears was treated with 2.2 N hydrochloric acid for different length of time (3, 6, 12, and 18 hr). The hydrolysis pattern of starches with the acid proceeded rapidly up to 12 hr and then the approached constant values. The swelling power of acid-modified starches measured at all temperatures was lower than that of its native counterparts and the water solubility index increased as temperature and hydrolysis time increased. Rapid visco analyzer viscograms of acid-modified starches demonstrated a very low viscosity as compared with that of native starch. However, Xray diffraction did not show any significant alteration in the crystallinity after acid-modification.