• 제목/요약/키워드: proximate analysis

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Nutritional Changes of Buckwheat During Germination (발아중 메밀의 영양성분의 변화)

  • Lee, Eun-Hye;Kim, Chul-Jai
    • Journal of the Korean Society of Food Culture
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    • v.23 no.1
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    • pp.121-129
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    • 2008
  • To produce buckwheat sprouts, buckwheats were germinated at $23{\pm}2^{\circ}C$ up to 8 days in total darkness. In proximate analysis, moisture content increased from 13.87% of buckwheat groats to 93.75% of buckwheat sprouts on the 8th day of germination. On dry weight basis, lipid and ash contents increased like as protein content increased from 13.45% to 21.82% while carbohydrate content decreased due to enzyme hydrolysis. Amino acids were rich in glutamic acid, aspartic acids, and lysine, and also the ratio of the essential amino acids to total amino acids increased from 26.84% to 36.84%. Vitamin C did not exist in buckwheat groats but its content has continued to increase as far as 99.56 mg/100 g buckwheat sprouts. Rutin continued to increase by HPLC analysis from 4.71 mg/100 g buckwheat groats to 1,524 mg/100 g buckwheat sprouts. In analysis of organic acids, oxalic, maleic, and citric acids were commonly found in buckwheat sprouts. Fagopyrin was found almost none in buckwheat sprouts. In conclusion, the conversion of buckwheat seeds into sprouts through germination in darkness results in physically different final product with nutritional changes such as higher content of rutin, generation of vitamin C, abundance of the essential amino acids, and the existence of fagopyrin on very little.

Effect of Artemisia Princeps Var Orientalis and Circium Japonicum Var Ussuriense on Serum Lipid of Hyprlipidemic Rat (쑥 및 엉겅퀴가 식이성 고지혈증 흰쥐의 혈청 지질에 미치는 영향)

  • 임상선
    • Journal of Nutrition and Health
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    • v.30 no.1
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    • pp.12-18
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    • 1997
  • The effects of Artemisia princeps var orientalis(mugwort), Circium japonicum var ussuriense(Unggungqui) on serum lipid componets in rats was evaluated. Thirty rats divided into 5 experimental groups were fed with the diet containing 1% cholesterol, 0.25% sodium cholate, 10% coconut oil and 5% lard(control diet), supplemetned with 5% plant powder or its water soluble extract(experimental diet) for 4 weeks. Proximate analysis data and compositions of ash, dietary fiber and fatty acids in plants were presented. The concentrations of the total cholesterol was significantly lower in Ungungqui powder, Ungungqui extract and mugwort powder diet groups than the control. Serum HDL-cholesterol level was significantly higher in Unggunqui powder and Unggunqui extract diet group than the control. The concentration of LDL was significantly lower in Unggungqui power or extract diet group compared to the control. The values of VLDL and chylomicron were comparatively lower in Unggungqui power and mugwort powder diet group than in the other diet groups. The concentration of seum triglyceride and phospholipid was lower in Unggungqui powder diet group than in the control.

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Characterization of Agarose Product from Agar Using DMSO

  • Jeon, You-Jin;Athukorala, Yasantha;Lee, Je-Hee
    • ALGAE
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    • v.20 no.1
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    • pp.61-67
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    • 2005
  • Agar was extracted from Gelidium amansii, which was harvested at the shores of Jeju Island in South Korea. As a unique solvent, the ability of dimethyl sulfoxide (DMSO) was used to separate agarose from agar by removing agaropectine and quality of the resultant agarose was characterized for chromatography purposes. Agar sample was agitated by motor-driven stirrer with DMSO in a water bath (at 70$^{\circ}C$ for 2 h) and centrifuged (3,000 rpm for 20 min). Resultant upper agarose layer was gelled, washed, dried and milled. The quality of agarose was evaluated by the analysis of proximate chemical composition, sulfate content, gelling strength and DNA migration. In this study, the separated agarose showed low sulfate amount (0.28%) and showed high gel strength (1190 g ${\cdot}\;cm^{-2}$). The resolution power and the ligase activities gave clear picture about the suitability of the present agarose for practical purposes.

A Study on the Chemical Compsition and Hypocholesterolaemic Effect of Nostoc commune (돌해파리의 성분 및 혈청 콜레스테롤 저하작용에 관한 연구)

  • 강문선;임상선;이종호
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.26 no.3
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    • pp.468-474
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    • 1997
  • The chemical composition and hypocholoesterolaemic effect of Nostoc commune were studied. Proximate analysis data, composition of dietary fiber and oxalic acid-ammonium oxalate soluble substance of Nostoc commune were presented. Thirty rats were fed with the one of the following diet for three weeks: The control diet contained 0.75% cholesterol, 0.25% sodium cholate and 5% cellulose powder, CF was cholesterol free, PNC, ONC and RNC diet contained 7.2% powder, 2.2% extracts and 5% residue of Nostoc commune respectively. The lipid components of serum were assayed. The concentration of the total cholesterol was significantly lower in PNC, ONC than the control. The concentration of the total cholesterol was significantly lower in PNC, ONC than the control. The concentration of HDL-choloesterol was significantly higher in PNC than the control. The concentration of LDL, VLDL and chylomicron were comparatively lower in CF and PNC. The concentration of seum triglyceride and phospholipid was lower in PNC group than in the other group.

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Evaluation of Physico-chemical and Textural Properties, and Sensory Evaluation of No-fat Sausages Manufactured with Various Salt Levels

  • Lee, Hong-C.;Chin, Koo-B.
    • Proceedings of the Korean Society for Food Science of Animal Resources Conference
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    • 2004.05a
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    • pp.239-241
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    • 2004
  • pH, proximate analysis and functional properties were not significantly affected by reduced salt levels in NFS which contained 75${\sim}$76% moisture, 14${\sim}$15% protein < 0.5% fat in the final products. However, NFSs had differences in color and EM (%) values as compared to RFS, The results of textural test showed that they were not different with reduced salt levels (0.75${\sim}$1.5%) among the RFS and no-fat treatments (P>0.05). NFS containing 1.0% salt had similar sensory color, flavor and saltiness values to those RFS. These results indicated that NFSs was successfully manufactured with 1.0% salt level and these may contribute to the 'healthier meat products' for consumers due to no-fat and low-salt meat products.

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The Calculation Method of Coal Pyrolysis Products Depending on the Coal Rank (탄종별 열분해 생성물의 조성 계산방법)

  • Pak, Ho-Young;Seo, Sang-Il
    • Journal of Hydrogen and New Energy
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    • v.21 no.5
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    • pp.442-451
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    • 2010
  • This paper describes the calculation method to obtain the product composition of coal pyrolysis at high pressure and high temperature. The products of coal pyrolysis should be determined for the coal gasifier simulation, and this is the first step of the coal gasifier simulation. The pyrolysis product distribution greatly affects the coal gasifier efficiency such as carbon conversion, cold gas efficiency and the syngas composition at the outlet of the gasifier. The present calculation method is based on the coal ultimate/proximate analysis and several correlations among gasifier pressure, coal properties and pyrolysis products. The calculated products for 5 coals have been compared with those from the commercial pyrolysis model.

Trade in Developing East Asia: How It Has Changed and Why It Matters

  • Constantinescu, Cristina;Mattoo, Aaditya;Ruta, Michele
    • East Asian Economic Review
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    • v.22 no.4
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    • pp.427-465
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    • 2018
  • East Asia, for long the epitome of successful engagement in trade, faces serious challenges: technological change that may threaten the very model of labor intensive industrialization and a backlash against globalization that may reduce access to important markets. The analysis in this article suggests that how East Asia copes with these global challenges will depend on how it addresses three more proximate national and regional challenges. The first is the emergence of China as a global trade giant, which is fundamentally altering the trading patterns and opportunities of its neighbors. The second is the asymmetric implementation of national reform - in goods trade and investment versus services - which is affecting the evolution of comparative advantage and productivity in each country. The third is the divergence between the relatively shallow and fragmented agreements that regulate the region's trade and investment and the growing importance of regional and global value chains as crucial drivers of productivity growth.

Nutrient compositions of Korean mulberry fruits (Morus sp.) dried with low temperature vacuum dryer using microwave

  • Kim, Hyun-Bok;Kweon, HaeYong;Ju, Wan-Teak;Jo, You-Young;Kim, Yong-Soon
    • International Journal of Industrial Entomology and Biomaterials
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    • v.42 no.1
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    • pp.14-20
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    • 2021
  • Mulberry was dried with low temperature vacuum dryer using microwave. The nutritional compositions of microwave-dried mulberry including proximate composition, sugar content, mineral content, total phenolic, flavonoids, and anthocyanin, beta-carotene, vitamin C, and amino acid composition were measured. Sugar contents of mulberry were 42.6 mg/100g (Cheongilppong) and 43.27 mg/100g dw (Gwasang No. 2). The main components of mulberry sugars were fructose and glucose. Mineral analysis showed that K, P, Ca, and Mg were abundant regardless of mulberry cultivars.

Quality Characteristics of Sikhye made with Berries (베리류로 제조한 식혜의 품질 특성에 관한 연구)

  • Yang, Ji-won;Jung, Sung Keun;Song, Kyung-Mo;Kim, Young Ho;Lee, Nam Hyouck;Hong, Sang Pil;Lee, Kyung Hee;Kim, Young-Eon
    • Journal of the East Asian Society of Dietary Life
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    • v.25 no.6
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    • pp.1007-1017
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    • 2015
  • This study compared the physicochemical characteristics, proximate composition, taste compound, and antioxidant properties of Sikhye prepared with berries. Proximate composition and color were significantly different depending on the type of berry, whereas crude fat content and pH were not. The highest brix degree was $18.92^{\circ}Bx$ in strawberry Sikhye. Total free sugar, glucose, and fructose contents were highest in blueberry Sikhye. Titratable acidity, total acidity, and organic acid contents were highest in raspberry Sikhye. Analysis of relative antioxidative properties indicated that bokbunja Sikhye had the highest total polyphenol, flavonoid, and anthocyanin contents, highest DPPH radical scavenging ability, and highest reducing power and ferric reducing abilities in plasma. Principal component analysis suggests that bokbunja Sikhye has strong antioxidant and sweetness properties.

The Quality Attributes of Chicken Meats Imported from Korea and Other Countries in Japanese Market (일본시장에 유통중인 한국산과 각국산 닭고기의 물리화학적 및 미생물학적 품질 비교)

  • 최일신;김일석;사메지마쿠니히코;민중석;이상옥;이무하
    • Food Science of Animal Resources
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    • v.21 no.4
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    • pp.307-313
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    • 2001
  • This study was carried out to examine the physicochemical and microbiological characteristics of Korean and other countries chicken circulated in Tokyo, Japan. The breast meats of Korean, Japanese, and Chinese chickens and thigh meats of Korean, Japanese, Chinese, American, and Thai chicken were used. In the proximate analysis of breast meat, Korean chicken had the lowest crude protein and crude ash(P<0.01), but showed the highest content of moisture(P<0.001). TBA values of Japanese breast meat were higher than Korean and Chinese one. In thigh meat, crude fat of American one was significantly higher than the others(P<0.001), and had very high bacterial counts. Korean chicken thigh meats showed the lowest VBN values.

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