• Title/Summary/Keyword: Food studies

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Effect of the Extraction Method on the Soybean Embryo Factor 3 Activity (추출 방법에 따른 대두 배인자 3 역가)

  • Lee, Kyung-Hoon;Chung, Dong-Hyo;Kim, Seong-San;Song, Youn-Ho;Kim, Woo-Yeon
    • Applied Biological Chemistry
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    • v.38 no.1
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    • pp.63-66
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    • 1995
  • Soybean nuclear extracts were prepared to detect SEF3(soybean embryo factor 3), which is presumed to be a trans-acting factor for the expression of the soybean ${\beta}-conglycinin\;{\alpha}'$ subunit gene. To increase the specific activity of DNA probe during labeling with $[{\alpha}-^{32}P]$dATP, dATP was added to a final concentration of 1.1 mM during the chase reaction. It results in approximately four-fold increase of specific activity of the DNA probe. Effects of several modifications in preparation of soybean nuclear extracts were examined. It was found that glycerol is effective to stabilize SEF3 during the preparation of nuclear extracts and polyethylenimine could be used to increase the specific activity of SEF3 in nuclear extracts.

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Chemical Properties of Lignans, Their Effects on Human Health, and the Enhancement of Milk Function of Lignans (리그난의 화학적 특성, 인체 건강에 미치는 영향 및 리그난의 우유 기능 강화에 관한 연구 고찰)

  • Hwang, Hyo-Jeong;Yoon, Jin A;Shin, Kyung-Ok
    • Journal of Dairy Science and Biotechnology
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    • v.36 no.2
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    • pp.81-94
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    • 2018
  • This review discusses the characteristics of major lignans and related studies and provides a basis for future studies. Lignans are present in various food products consumed daily, such as flaxseed and other seeds, vegetables, fruits, and beverages including coffee, tea, and wine. Lignans are natural phytoestrogens with a structure similar to that of secoisolariciresinol (Seco), mataireinol (Mat), pinoresinol (Pin), medioresinol (Med), lariciresinol (Lari), and syringaresinol, which is then converted to enterodiol (END) and enterolactone (ENL), which are mammalian lignans and the primary biologically active enterolignans, by the intestinal microflora. The associations between lignans and a decreased risk of cardiovascular disease are promising; however, they are not yet well-established, probably owing to low lignan intake in habitual Western diets. Nonetheless, these associations were more prominent at the higher doses in interventional studies. Many studies on humans and animals have reported the benefits of lignan consumption in protecting against CVD and metabolic syndrome by reducing lipid and glucose concentrations. END and ENL reportedly exert protective effects including phytoestrogenic, antioxidant, anti-inflammatory, and anticancer effects through various mechanisms. Moreover, lignans reportedly exert beneficial effects in breast, colon, and prostate cancer and osteoporosis have reported that. However, future studies are required to confirm the association between lignan and disease.

Effects of garlic intake on cancer: a systematic review of randomized clinical trials and cohort studies

  • Lee, Jounghee;Zhao, Naisi;Fu, Zhuxuan;Choi, Jihee;Lee, Hae-Jeung;Chung, Mei
    • Nutrition Research and Practice
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    • v.15 no.6
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    • pp.773-788
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    • 2021
  • BACKGROUND/OBJECTIVES: Due to the rapid increase of global cancer incidence and mortality and a high level of interest in cancer prevention, a systematic review of garlic intake and cancer risk is needed. SUBJECTS/METHODS: We implemented a systematic review to examine the effects of varying levels of garlic intake on cancer. We conducted comprehensive literature searches in three electronic databases (MEDLINE, Embase, and Web of Science) for studies published between database inception and July or September of 2018. Two investigators independently screened abstracts and full-texts, extracted data, and assessed risk of bias (RoB). A total of one medium-quality randomized controlled trial (RCT) and 13 cohort studies graded as high RoB were included. RESULTS: The 1-year follow-up results from a RCT showed that a significant decrease in the number and size of colorectal adenomas among participants with colorectal adenomas who received high-dose aged garlic extract (AGE) compared with those who received low-dose AGE (P < 0.05). The results of prospective observational studies provided inconsistent associations of colorectal cancer risk with garlic supplements and garlic intake as food. CONCLUSIONS: In summary, the AGE was effective in reducing the number and magnitude of colorectal adenomas in one RCT, but there were inconsistent associations between garlic intake and colorectal cancer in cohort studies. Therefore, we could not draw a firm conclusion regarding the effects of garlic on cancer, because the current strength of evidence is inadequate due to a lack of number of high-quality RCTs.

A Review on the Application of Nanotechnology in Food Processing and Packaging

  • Cho, Seong-In;Kim, Yong-Rok;Lee, Joon Woo;So, Dae-Sup;Cho, Yong-Jin;Suh, Hyun Kwon;Park, Tu San;Oh, Seoung-Im;Im, Ji-Eun
    • Food Engineering Progress
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    • v.14 no.4
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    • pp.283-291
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    • 2010
  • Currently, nanotechnology is widely applied in various industrial fields and is rapidly emerging as a promising future technology. In food industries, nanotechnology is used to enhance food quality and safety. Numerous cutting-edge studies on the advantages of nanotechnology have been conducted in the fields of food processing, food ingredients and additives, food packaging, and food engineering for optimal health. The market for these areas of research has grown steadily, and is expected to continue to do so. Because of this, R&D for nanotechnology that can be used effectively in food industries is being performed by several companies, as well as in academic research institutions around the world. This review describes the recent global R&D trends that have been in progress for two key areas: food processing and food packaging.

The Effect of Oenanthe javanica Extract on Liver Function in Carbon Tetrachloride Treated Rabbits (미나리추출물(抽出物)이 가토(家兎)의 간장기능(貯臟機能)에 미치는 영향(影響))

  • Seo, Hwa-Joong;Lee, Myung-Yul
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.14 no.1
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    • pp.72-76
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    • 1985
  • This studies were conducted in an attempt to investigate the effect of Oenanthe javanics extract on enzyme activities of liver and excretory action of bile juice in serum of carbon tetrachloride-intoxicated rabbits. Long-term oral administration of this extracts shows more rapid recuperation in GPT, total cholesterol, alkaline phosphatase, total bilirubin and BSP values than control groups. 750 mg/kg-administered group shortens rapidly the recovery time o·』 GPT, total cholesterol and BSP values than 250 mg/kg administered groups. But any difference was not observed in alkaline phosphatase, bilirubin among two groups. In histological studies the lager amount-administered groups exhibited more rapid recovery of liver cell enlargement, oedema, necrosis in carbon-tetrachloride treated rabbits.

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Obesity: Interactions of Genome and Nutrients Intake

  • Doo, Miae;Kim, Yangha
    • Preventive Nutrition and Food Science
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    • v.20 no.1
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    • pp.1-7
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    • 2015
  • Obesity has become one of the major public health problems all over the world. Recent novel eras of research are opening for the effective management of obesity though gene and nutrient intake interactions because the causes of obesity are complex and multifactorial. Through GWASs (genome-wide association studies) and genetic variations (SNPs, single nucleotide polymorphisms), as the genetic factors are likely to determine individuals' obesity predisposition. The understanding of genetic approaches in nutritional sciences is referred as "nutrigenomics". Nutrigenomics explores the interaction between genetic factors and dietary nutrient intake on various disease phenotypes such as obesity. Therefore, this novel approach might suggest a solution for the effective prevention and treatment of obesity through individual genetic profiles and help improve health conditions.

Studies on Holding Methods for Quality Assurance of Salads Served at Foodservice Institutions (급식소에서 제공되는 샐러드류의 조리후 보관방법 설정을 위한 품질 연구)

  • 김혜영;고성희
    • Korean journal of food and cookery science
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    • v.20 no.2
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    • pp.211-218
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    • 2004
  • The issue of safety and quality of cooked food served at foodservice institutions has brought more attention to food scientists because the foodservice system is growing and becoming more popular in Korea. In order to control the quality and safety of cooked foods, the production and holding methods of foods should be carefully studied and the implications considered by the foodservice industry. Therefore, studies on microbiological, nutritional, physicochemical and sensory quality are essential in this area. The purpose of the present study was to evaluate the chemical and microbial qualities of salads during holding. Several holding temperatures in the range of 5∼26$^{\circ}C$ were used for holding. Chicken salad and ham & cucumber salad exceeded the standard after 30min of room temperature holding after preparation. Quality deterioration increased at higher holding temperatures, which suggested that refrigerator holding is the most desirable.