• Title/Summary/Keyword: acid content

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Quality Characteristics of White Pan Bread with Kimchi Powder (김치 분말첨가 식빵의 품질 특성)

  • Kim Rae-Young;Ki Mi-Ra;Kim Mun-Yong;Lee Goon-Ja;Choi Hyeon-Mee;Chun Soon-Sil
    • Journal of the East Asian Society of Dietary Life
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    • v.15 no.3
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    • pp.340-345
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    • 2005
  • White bread with 1, 2, 3, 4 and $5\%$ Kimchi powder added and control samples were tested for moisture content, volume, height, color, free amino acid content, texture, and sensory characteristics. Moisture content was about $40.46\~41.35\%$ and increased according to the addition of Kimchi powder. Volume and height were increased with increasing Kimchi powder content For the crust and crumb color, lightness was decreased, but yellowness and redness were increased as Kimchi powder content increased For free amino acid content, glutamic acid, alanine, serine and leucine were detected in the white bread, and samples with higher content of kimchi powder showed higher amount of total free amino acid content From the sensory analysis, one with $3\%$ kimchi powder got the highest score for flavor, texture, color, moistness and overall acceptability.

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Physicochemical Quality Comparison of Commercial Doenjang and Traditional Green Tea Doenjang (전통식 녹차된장과 일부 시판된장의 이화학적 특성)

  • 정복미;노승배
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.33 no.1
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    • pp.132-139
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    • 2004
  • This study was peformed in order to compare general components, color, free amino acid, fatty acid and organic acid contents between commercial doenjang (C-1, C-2, C-3) and green tea doenjang (GT). The moisture content in green tea doenjang was higher than that in commercial doenjang, but the contents of crude protein, carbohydrate and energy in commercial doenjang were higher than those in green tea doenjang. The crude lipid and fiber contents of commercial doenjang were similar to green tea doenjang. Catechin content of green tea doenjang was 2.3%. The total content of free amino acids in commercial doenjang ranged from 2,739∼6,380 mg% in which it showed wide variation among samples and the total content of free amino acids in green tea doenjang was 3000 mg%. Glutamic acid was almost high in commercial doenjang except one product but green tea doenjang was low. Linoleic acid (51%) was the highest content among the fatty acids. The major organic acid in both commercial and green tea doenjang was oxalic acid and its content in commercial times higher than in green tea doenjang. The antioxidant activity of green tea doenjang was higher than that of commercial doenjang.

Optimum Cultivation Conditions from Habitat Status of Glehnia littoralis in Korean Midwest Region (국내 중서부지역 갯방풍의 자생지 생육환경에 따른 재배적성 고찰)

  • Kang, Hee Kyoung;Kim, Seong Min;Song, Hong Seon
    • Korean Journal of Medicinal Crop Science
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    • v.25 no.2
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    • pp.102-107
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    • 2017
  • Background: The present study was conducted to investigate the fatty acid content and habitat conditions of Glehnia littoralis in the Korean midwest region. Methods and Results: The emergence area of G. littoralis was 36.1 m from the coastline at an elevation of 4.2 m and slope of 4.3%. The soil of the habitat was sandy, the pH was 8.4, organic matter content was 0.4%, $P_2O_5$ content was 9.1 mg/kg and the content of K, Ca, Mg and Na were 0.09, 9.31, 0.43 and $0.23cmol^+/kg$, respectively. Other plants growing in this area with G. littoralis included 16 taxa. Plant with high coverage and frequency were Carex kobomugi, Elymus mollis, Imperata cylindrica var. koenigii, Lathyrus japonicus, Calystegia soldanella and Carex pumila. In the seeds of G. littoralis, the maximum fatty acid content was 65.5% oleic acid, 28.7% linoleic acid, 4.3% palmitic acid, 1.5% stearic acid, and 0.2% linolenic acid. Conclusions: In G. littoralis of Korean midwest, the scope of collection and cultivation for medicinal purposes was broad, because differences in associated vegetation, soil composition, and fatty acid content owing to habitat conditions was low.

Changes in Lipid Components During Germination of MungBean (녹두발아(綠豆發芽)중 지방질성분(脂肪質成分)의 변화(變化))

  • Choi, Kap-Seong;Kim, Ze-Uook
    • Korean Journal of Food Science and Technology
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    • v.17 no.4
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    • pp.271-275
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    • 1985
  • This investigation was conducted to observe changes of lipid components (phospholipids, free sterols, free fatty acids, triglycerides and estrified sterols) and fatty composition in diethyl ether extract and 86% MeOH extract from cotyledon and seedling axis of mung bean which were germinated in the dark at 25-$27^{\circ}C$ for 7 days. The total lipid contents in cotyledonn and seedling axis gradually decreased during germination. The triglyceride content in total lipid from cotyledon decreased and free fatty acid content increased, but triglyceride content from seedling axis decreased slightly and free fatty acid content decreased. Free sterol, esterified sterol and phospholipid content in cotyledon increased continuously, but their content in seedling axis dcreased slightly. The major fatty acids in mung bean were palmitic acid, linoleic acid and linolenic acid.

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Comparative Studies on the Lipid Content and Neutral Lipid Composition in Japonica and Indica Rice Bran Oils (일반계 및 다수계 미강유의 지방질 함량과 중성지방질 조성)

  • Kwon, Kyoung-Soohn;Kim, Hyun-Ku;Ahn, Myung-Soo
    • Korean Journal of Food Science and Technology
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    • v.28 no.2
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    • pp.207-211
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    • 1996
  • This study was carried out to determine the lipid content and neutral lipid compositions of Japonica and indica rice bran oils. The average content ratio of neutral lipids, g]ycolipids and phospholipids were 89.5 : 4.0 : 6.5 in japonica rice bran oil and 93.7 : 2.6 : 3.7 in Indica rice bran oils, respectively. It was seen that the neutral lipid content was significantly higher in JAponica rice bran oil, while the contents of glycolopods and phospholipids were significantly higher in japonica rice bran oils. The neutral lipids consisted of esterified sterol, triglyceride, free fatty acid, free sterol, diglyceride and monoglyceride. Triglyceride was the highest (48.7-49.7%) among the neutral lipids. Major fatty acids of rice bran oils were oleic (39.65-43.68f)), linoleic (32.62-39.42%) and palmitic acid (16.54-18.83%). The linoleic acid content was higher in Japonica rice bran oils than in indica rice bran oils.

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Effect of Moisture Content and Storage Periods on Nutrient Composition and Organic Acids Change in Triticale Round Bale Silage

  • Ilavenil Soundharrajan;Jeong-Sung Jung;Hyung Soo Park;Hyun Jeong Lee;Ouk‐Kyu Han;Ki-Choon Choi
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.42 no.4
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    • pp.270-275
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    • 2022
  • Livestock production costs are heavily influenced by the cost of feed, The use of domestically grown forages is more desirable for livestock feed production. As part of this study, triticale, which is an extremely palatable and easily cultivable crop in Korea, was used to produce low moisture silage bales with lactic acid bacteria (LAB) and then stored for different periods. We examined the nutrient content of silage, such as crude protein (CP), acid detergent fiber (ADF) and neutral detergent fiber (NDF), as well as their organic acids, including lactic acid, acetic acid, butyric acid, at different storage periods. The nutrient content of silages, such as crude protein, ADF, and NDF, did not change significantly throughout storage periods. Organic acid data indicated that lactic acid concentrations increased with increasing moisture contents and storage periods up to nine months. However, further extending storage to 12 months resulted in a reduction in the lactic acid content of all silages as well as an increase in their pH. Based on the present results, it suggested that the production of low moisture silage with the LAB may be able to preserve and maintain its quality without altering its nutritional composition. Also, the lactate content of the silage remained significant for at least nine months.

Chemical properties of Watercress(Oenanthe javanica D.C.) Depend upon Cultivating Methods (재배방법이 다른 미나리의 성분 특성)

  • Lee, Hong-Yeol;Yoo, Maeng-Ja;Chung, Hee-Jong
    • Journal of the Korean Society of Food Culture
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    • v.16 no.3
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    • pp.235-242
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    • 2001
  • Chemical properties of the different parts of watercress(Oenanthe javanica D.C.) grown and harvested from the culture fields under different cultivating methods were studied. In proximate analyses of watercress in parts, moisture contained more in stem than in root or in leaf, but crude protein and crude lipid contents were lower in stem than in root or in leaf. Crude ash in root contained up to about double amount in leaf or stem. Major mineral elements detected in watercress were Fe, Mg, Ca, and K, and their contents in root was higher than those in stem or leaf. Especially, Fe in root was significantly higher than that in stem or in leaf. Total free sugar composed mainly with fructose and glucose, was the highest in watercress from Hwasoon and followed the watercress from Jeonju and Donggok in order. Free sugar content was highest in leaf and the lowest in root. Major water-soluble vitamins were vitamin C, thiamin and biotin and the content of vitamin C was higher than others. These vitamins contained more in leaf than in stem or root. Niacin contained 6.09 mg/100 g in leaf of watercress from Hwasoon, which was much higher than others, but it was not detected in stem of watercress from Jeonju. Organic acids detected were oxalic acid, citric acid and malic acid and other 12 organic acids were not detected. In fatty acid composition, there were significant differences among watercresses from different parts and different culture fields. Linoleic acid, linolenic acid and palmitic acid were major fatty acids contained in watercress and it took about 80% of the total content. Amino acid content in leaf was higher than that in root and in stem. Glutamic acid and proline were major amino acids in stem of watercress from Jeonju and in stem of watercresses from Hwasoon and Donggok, respectively. In leaves of all three watercresses glutamic acid content was the highest.

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Effect of Sowing Time on Oil Content and Fatty Acid Composition Characteristics in Rapeseed Cultivars (파종시기에 따른 유채(Brassica napus L.) 기름함량 및 지방산 조성 특성)

  • Lee, Tae Sung;Lee, Yong Hwa;Kim, Kwang Soo;Lee, Hoo Kwan;Jang, Young Seok;Choi, In Hu;Kim, Kwan Su
    • Korean Journal of Plant Resources
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    • v.27 no.2
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    • pp.202-208
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    • 2014
  • This study was carried out to find the effect of sowing time on oil content and fatty acid composition of 6 domestic rapeseed cultivars, 'Sunmang', 'Tammiyuchae', 'Tamlayuchae', 'Naehanyuchae', 'Yongsanyuchae' and'Hallayuchae'. The delaying sowing date was negatively correlated with oil content ($-0.471^{**}$), indicating that oil content was higher with earlier sowing date. Fatty acid composition was similar in all cultivars. The delaying sowing date was positively correlated with the increment of stearic acid ($0.268^*$) and linoleic acid ($0.263^*$), while was inversely correlated with palmitic acid ($-0.278^*$) across all 6 cultivars.

The Comparative Studies for the Anti-stress Effect of Guibitang and Ascorbic Acid on Heating and Swimming Stress (열(熱)Stress 및 유영(游泳)Stress에 대(對)한 귀비탕(歸脾湯)과 Ascorbic Acid의 항(抗)Stress효능(效能) 비교연구(比較硏究))

  • Lee Hwa-Sin;Whang Wei-Wan
    • Journal of Oriental Neuropsychiatry
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    • v.6 no.1
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    • pp.19-39
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    • 1995
  • In order to compare the anti-stress effect of Guibitang with that of ascorbic acid, after these medicines were administered to guinea pigs induced by heating and swimming stress, the changes of the weight of body and organ, and content of plasma catecholamines, serum total cholesterol, free cholesterol, triglyceride, protein, glucose and cortisol were measured. The results were as follows : 1. The weight of the body was increased with statistical significance in the groups administered ascorbic acid and ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid on both heating and swimming stress. 2. The weight of spleen decreased with statistical significance in the groups administered ascorbic acid, Guibitang and ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid on heating stress, but in case of swimming stress, the weight of spleen decreased with statistical significance in the groups administered ascorbic acid and ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid. The weight of adrenal decreased with statistical significance in the groups administered ascorbic acid and ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid on heating stress alone. 3. Plasma norepinephrine content decreased with statistical significance not only in the groups administered ascorbic acid and ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid but in the group administered ascorbic acid with Guibitang as compared with in the group administered ascorbic acid on heating stress. In case of swimming stress, norepinephrine decreased with statistical significance in the groups administered ascorbic acid, Guibitang and ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid. 4. Plasma dopamine content decreased with statistical significance only in the group administered ascorbic acid and ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid on both heating and swimming stress. 5. Serum total cholesterol content decreased with statistical significance in the groups administered ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid on heating stress, but in case of swimming stress, it decreased with statistiscal significance only in the group administered ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid. 6. Serum triglyceride content decreased with statistical significance not only in the groups administered ascorbic acid, Guibitang and ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid but in the group administered ascorbic acid with Guibitang as compared with in the group adminstered ascorbic acid on heating stress. In case of swimming stress, triglyceride decrease with statistical significance only in the group administered ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid. 7. Serum glucose content increased with statistical significance in the groups administered Guibitang and ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid on both heating and swimming stress, particulaly in case of swimming stress, in the group administered ascorbic acid with Guibitang, it increased with statistical significance as compared with in the group administered ascorbic acid. 8. Serum cortisol content decreased with statistical significance only in the group administered ascorbic acid and ascorbic acid with Guibitang as compared with in the group administered non ascorbic acid on heating stress.

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The Effect of Acid Condiment and Cooking Condition on Aluminum Dissolution from Aluminum Cookware (알루미늄 조리기구에서 산성조미료와 조리조건이 알루미늄 용출에 미치는 영향)

  • ;;南出隆久
    • Journal of the Korean Home Economics Association
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    • v.38 no.2
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    • pp.21-26
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    • 2000
  • Effect of aluminum dissolution from aluminum sauce pans with the kind and concentration of acidity, boiling times and temperature of acidity solution, in new and old sauce pans, and aluminum content in typical food was investigated. As acetic acid concentration increases, aluminum content has increased. But malic acid and citric acid have suddenly increased until acidity concentration would be 0.4%. After that rapidly increasing is not shown. As boiling time and temperature of acidity solution increases, concentration of aluminum dissolved from aluminum sauce pan has increased. Concentration of aluminum by repeated use has increased only a slightly. But aluminum content has dissolved in large quantities from new pan rather than old pan.

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