• Title/Summary/Keyword: food components

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Creation of Multi-Functional Foods

  • Yamada, Koji
    • Food Industry And Nutrition
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    • v.9 no.1
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    • pp.15-22
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    • 2004
  • Foods contain various biologically functional components which contribute to our health. As shown in Table 1, bioregulatory function of food components are classified into five categories. In the enhancement of biodefense system, dietary fibers (DF), unsaturated fatty acids (UFA), antioxidants are effective. These components are also, effective in other categories. This means that food components are multifunctional. To maintain our health, effective use of multi-functional activity of food components is essential. (omitted)

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A Study on the Effect of Food Intake on Radial Pulse using Fourier Analysis (음식섭취에 따른 좌우(左右) 촌관척(寸關尺) 6부위 맥파의 주파수 분석)

  • Yim, Yun-Kyoung;Park, Kwang-Suk
    • The Journal of Korean Medicine
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    • v.32 no.4
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    • pp.139-148
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    • 2011
  • Objective: The purpose of this study was to investigate the effect of food intake on the Fourier components of radial pulse wave. Methods: Thirty-one healthy male subjects participated in this study. Radial pulse was measured using 3 dimensional pulse imaging system (DMP-3000) before, right after, 40 minutes after, 80 minutes after and 120 minutes after food intake. Fourier transform was performed and the frequency and amplitude of Fourier components were analyzed. Results: 1. The frequency and the amplitude of Fourier components of radial pulse wave increased significantly after food intake. 2. The frequency of Fourier components increased right after food intake and then gradually decreased as time passed, however the amplitude of Fourier components increased and maintained certain levels and patterns throughout the experimental period of 120 minutes. 3. The change ratios of the frequency and the amplitude of Fourier components after food intake varied with the pulse measuring locations. Conclusions: Food intake exerts an influence on radial pulse wave, resulting in increase of frequency and amplitude of Fourier components. The change ratios of the frequency and the amplitude of Fourier components after food intake varied with the pulse measuring locations.

Composition, Structure, and Bioactive Components in Milk Fat Globule Membrane

  • Ahn, Yu-Jin;Ganesan, Palanivel;Kwak, Hae-Soo
    • Food Science of Animal Resources
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    • v.31 no.1
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    • pp.1-8
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    • 2011
  • A unique biophysical membrane which surrounds the milk fat globules is called the milk fat globule membrane (MFGM). Various researches were studied about origin, composition, structure and bioactive components of MFGM. Bioactive protein components of MFGM play an important beneficiary function such as defense mechanism in new born. Among the bioactive lipid components from MFGM phospholipids showed health enhancing functions. The phospholipids also help in the production of certain dairy product from deterioration. MFGM phospholipids also showed antioxidant activity in some dairy products such as butter and ghee produced from milk of buffalo. Based on the beneficial effects, researchers developed MFGM as functional ingredients in various food products. This current review focuses on health enhancing function of MFGM and its components in various dairy products.

The Flavor Components of Traditional Sigumjang Meju (전통 시금장 메주의 휘발성 향기성분)

  • Choi, Ung-Kyu;Kim, Young-Joo;Ji, Won-Dae;Son, Dong-Hwa;Choi, Dong-Hwan;Jeong, Min-Seon;Chung, Yung-Gun
    • Korean Journal of Food Science and Technology
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    • v.31 no.4
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    • pp.887-893
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    • 1999
  • This study was conducted to investigate flavor components of sigumjang meju and barley bran. Among 52 kinds of flavor components identified in barley bran, the content of hexanal was the most followed by butanoic acid, 2-pentylfuran and hexanoic acid. Among 66 kinds of flavor components identified in 12 sigumjang mejus, the contents of 2-furancarboxaldehyde, 1-(3-methoxyphenyl)-ethanone and tetramethylpyrazine were more than those of any other components. Twenty two kinds of flavor components were detected in both barley bran and sigumjang meju. The contents of butanoic acid, hexanal and 2-pentylfuran were higher in barley bran than sigumjang meju. The contents of 2-furancarboxaldehyde, 1-(3-methoxyphenyl)-ethanone and tetramethylpyrazine were higher in sigumjang meju than barley bran. Thirty kinds of volatile components were detected only in barley bran and 44 kinds were detected only in sigumjang meju.

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Changes of Functional Components Present in Lipid Foods during Cooking (유지식품의 조리 중 기능성분의 변화)

  • Choe, Eun-Ok
    • Korean journal of food and cookery science
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    • v.21 no.5
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    • pp.742-758
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    • 2005
  • Lipid-based functional components present in foods undergo chemical changes during cooking. Useful n-3 and n-6 fatty acids, phytosterols, tocopherols, and carotenoids are degraded by thermal cooking such as frying, resulting in loss of their physiological functions. However, conjugated linoleic acid and diacylglycerols can be formed during heating, which would be beneficial to the health. Degree of degradation and formation of the functional components depends on the cooking method, cooking temperature and time, lipid matrix containing the components, and the presence of other materials. Although it is clear that the content of each functional component varies during long-heating in a model system consisting of small numbers of components, the real foods cooked in a small scale for a limited cooking time do not show highly significant differences in the functional components contents from raw food materials.

Effects of Food Components on the Antibacterial Activity of Chitosan against Escherichia coli

  • Hong, Yi Fan;Moon, Eun-Pyo;Park, Yun-Hee
    • Food Science and Biotechnology
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    • v.17 no.6
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    • pp.1365-1367
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    • 2008
  • The antibacterial activity of chitosan against Escherichia coli was investigated in the presence of NaCl, sucrose, and ethanol to assess the potential use of chitosan as a biopreservative in food products containing these components. The inhibitory activity of chitosan decreased slightly upon the addition of NaCl and sucrose, respectively to culture broth containing 100 ppm of chitosan (Mw 3,000), while the addition of ethanol enhanced the inhibitory activity of chitosan on growing cells. The addition of these components to non-growing cells prior to chitosan treatment demonstrated that NaCl protected the cells from the inhibitory activity of chitosan, while sucrose had no effect. Ethanol addition to non-growing cells increased cell death by chitosan treatment. Finally, binding of fluorescein isothiocyanate (FITC)-labeled chitosan to E. coli was measured in the presence of the food components. The FITC-labeled chitosan binding to cells decreased upon NaCl addition, was not affected by sucrose, and increased following treatment with ethanol.

Study of Food Analysis Research Papers in Food Science related Korean Journals by Content Analysis (한국 식품 관련 학회지(1984 - 1993)에 게재된 '식품성분 분석' 연구논문에 대한 내용 연구)

  • Kim, Jung-Suk;Kim, Young-Nam
    • Korean Journal of Human Ecology
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    • v.3 no.1
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    • pp.51-58
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    • 1994
  • The rapid development of science and technology has brought about a quantitative expansion and a decrease of practical life span of information. Food science, a kind of life science and practical science, can not be an exception. Analysis of food components is the fundamental basis of the Food Science. So I would like this to be of some help to the following researches through the quantitative and qualitative analysis of the contents of the food analysis research papers in food science related Korean journals. Five hundred seventy four research papers published from 1984 to 1993 in the three journals, that is, Korean Journal of Food Science & Technology. The Korean Journal of Nutrition, The Korean Journal of Home Economics, which is three major journals read by people in Home Economics area are analyzed in this study. The method applied in this study is content analysis. Followings are the results of the content analysis : 1) When categorize the material foods into food groups, cereal group is analyzed most often(15.8%), followed by fish and shellfish group(12.4%), oil and fat group(11.8%). The least often analyzed food group is egg group. Among the food soybean is most often analyzed(6.0%), followed by polished rice(3.7%), glutinous rice(2.2%), cabbage(2.1%) and human milk(1.8%). 2) About the analyzed food components, the general components such as moisture, crude protein, crude fat, carbohydrate and ash has been analyzed very often but the trace nutrients such as vitamins and minerals has scarcely been analyzed. 3) The method used in the food components analysis is usually AOAC(Association of Official Analytical Chemist, USA). HPLC was applied to the analysis of many food components like amino acids, fatty acids, vitamin A, thiamin, riboflavin, niacin, vitamin C and vitamin E.

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Supercritical Fluid Extraction of Volatile Components from Strawberry (딸기의 휘발성 향기성분의 초임계 유체 추출)

  • Lee, Hae-Chang;Seo, Hye-Young;Shin, Dong-Bin;Park, Yong-Kon;Kim, Yoon-Sook;Ji, Joong-Ryong;Choi, Hee-Don
    • Korean Journal of Food Science and Technology
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    • v.41 no.6
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    • pp.615-621
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    • 2009
  • In order to optimize the supercritical fluid extraction (SFE) conditions of volatile components from the strawberry, we conducted an evaluation of the sample preparation and SFE operating conditions. The analysis of the volatile components extracted by a variety of sample preparation protocols led to the identification of 30, 26, 30, and 34 volatile components in fresh, freeze-dried, 30% celite and 70% celite treatments, respectively. The 70% celite treatment was the most effective in extracting the volatile components from strawberry via SFE. Analysis of the volatile components extracted by a variety of SFE operating conditions yielded identifications of 34, 35, 34, and 35 volatile components at 3,000 psi (40, $50^{\circ}C$) and 6,000 psi (40, $50^{\circ}C$), respectively. The extraction yield of alcohols and acids, and the total volatile component contents, were highest under conditions of 3,000 psi and $55^{\circ}C$. Volatile components from the strawberry were extracted via SFE, simultaneous steam distillation and extraction (SDE), and solvent extraction (SE). The analysis of the volatile components extracted via different extraction methods resulted in the identification of 56, 34, and 32 volatile components in the SDE, SFE, and SE extracts, respectively. The total volatile component contents identified in the SDE, SFE, and SE extracts were $20.268{\pm}1.144$, $21.627{\pm}1.215$ and $2.476{\pm}0.177\;mg/kg$, respectively. The SFE extract evidenced higher contents of sweet flavors such as 2-methylbutanoic acid, 2-methylpropanoic acid, and hexanoic acid than the SDE and SE extracts. SFE proved to be the most appropriate method for the extraction of fresh volatile components from the strawberry.

Analytical Survey on the Package Source, Components, and Various Characteristics of Processed Foods in Korea (국내 가공식품의 포장 재질, 형태 및 다양한 특징 분석 연구)

  • Song, Hyun Ju;Chang, Yoonjee;Park, Se-Jong;Choi, Jae Chun;Han, Jaejoon
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.23 no.3
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    • pp.173-181
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    • 2017
  • This study was conducted to investigate the packaging characteristics including pack sources and pack components of processed foods in Korea. For the survey, 704 food package samples were selected based on the consumption of top 10 brackets in each food item. They were consisted of 1,245 packaging components. Seven specific items were firstly investigated including product name, capacity of the food, package component, package source, food contact area, food contact ratio, and package thickness. The processed foods in Korea can be classified into 16 pack sources and 21 pack components, respectively. By using this information, the data were analyzed specifically. The collected data were analyzed in 8 major categories: frequency of use by pack components and pack sources, pack components by the products, pack sources by the products and pack components, pack thickness/food contact ratio by the products, food contact ratio by pack components and pack sources. Consequently, this survey will provide various information of the packaging characteristics of processed foods in Korea.

Characteristics of Useful Components in the Leaves of Baechohyang(Agastache rugosa, O. Kuntze) (배초향 잎의 유용성분과 특성)

  • 최갑성;이홍열
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.2
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    • pp.326-332
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    • 1999
  • In order to develope useful components and to apply in food additives, various components in the leaves of baechohyang were determined according to picking date. Moisture and ash were reached to 74~82%, 1.5~3.4%, respectively, and major sugars were fructose, glucose, sucrose, and maltose. Glutamic, aspartic acid, and leucine constituted the main component amino acids and their contents were relatively higher in the samples of summer and young leaves. Among free amino acids, histidine showed the highest components and methionine were the lowest. Potassium, calcium, and sodium were main mineral components. The content of ascorbic acid were 6.6~9.2mg% and seasonal variations were negligible. Muture leaves contained more polyphenols as much as 108~181mg% and the amount of bound fractions were much more. Periodic evaluation of phenolic compounds were made and major components of bound fractions were caffeic, syringic, and ferulic acid.

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