• 동아시아식생활학회지
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• 제26권3호
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• pp.230-236
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• 2016

The study was carried out to evaluate the quality of commercial pork and beef jerky at a market in Korea. The amount of food additives, place of origin, meat content, microbiological and physicochemical characteristics were investigated in 46 different jerky samples. Meat contents of pork and beef jerky were 75.2~94.0% and 80.0~95.6%, respectively. Food additives, including sodium nitrite, potassium sorbate, and sodium erythorbate were mainly used in jerky. Pork jerky was processed from domestic pork, and beef jerky was mostly processed from imported beef from the USA, Australia, or New Zealand. Pork jerky contained $23.82{\pm}5.74%$ moisture, $37.86{\pm}7.05%$ crude protein, $6.16{\pm}4.91%$ crude fat, and $4.6.87{\pm}1.76%$ crude ash. Beef jerky contained $26.64{\pm}5.21%$ moisture, $41.36{\pm}3.50%$ crude protein, $4.67{\pm}3.46%$ crude fat, and $7.21{\pm}1.91%$ crude ash. Water activity (Aw) of pork jerky was $0.73{\pm}0.09$ while that of beef jerky was $0.78{\pm}0.08$. Volatile basic nitrogen (VBN) content to jerky was 7.1~36.0 mg/100 g. There was no significant difference in the physicochemical composition of meat type (p<0.05). Coliform, Escherichia coli and Staphylococcus aureus were not detected in pork or beef jerky, whereas yeast and molds were detected below $1.2{\times}10^1CFU/g$ in beef jerky samples.

• 한국식품저장유통학회지
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• 제13권5호
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• pp.655-660
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• 2006

유기재배법이 배추의 화학적 품질특성에 미치는 영향을 규명하기 위하여, 유기와 일반 재배 배추의 영양 및 기능성성분의 함량을 각각 비교분석 하였다. 일반성분 중 수분은 유기농 배추보다 일반배추에서 높은 함량을 나타내었으나 조단백질, 조지방, 탄수화물 및 조회분은 일반배추보다 유기농배추에서 높은 함량을 나타내었다. 수용성 및 불용성식이섬유, ascorbic acid 및 dehydroascorbic acid, chlorophyll a 및 b, carotenoid 등의 각 함량은 일반배추보다 유기농배추에서 높게 나타났다. 무기질 중 칼륨함량은 유기농배추보다 일반배추에서 높았으나 칼슘, 인, 철, 마그네슘, 황 및 아연의 함량은 일반배추보다 유기농배추에서 높게 나타났다. 유리당인 fructose, glucose 및 sucrose의 각 함량은 유기농배추에서 높았으나 유기산인 malic acid와 citric acid의 함량은 유기농배추에서 낮게 나타났다.

• 한국식품과학회지
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• 제17권5호
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• pp.340-344
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• 1985

본(本) 연구(硏究)에서는 한천(寒天)의 조단백질(粗蛋白質). 회분(灰分)의 제거방법(除去方法) 및 gel강도(强度)에 미치는 영향(影響)을 검토(檢討)하였다. 조단백질(粗蛋白質) 및 회분(灰分)의 제거방법(除去方法)으로서 Trichloroacetic acid(TCA) 와 Perchloric acid(PCA)의 첨가처리(添加處理) 및 수침법(水浸法)을 사용(使用) 하였으며 그 결과(結果)는 다음과 같다. 조단백질(粗蛋白質) 제거공정(除去工程)에서 단백질(蛋白質) 침전제(沈澱劑)로는 PCA 가 TCA보다 더 효율적(效率的)이었다. 0.01% PCA 첨가시(添加時) 조단백질(粗蛋白質) 함량(含量)은 4.0%에서 1.0%로 감소(減少)하였고, gel 강도(强度)는 원료한천(原料寒天) 220g/$cm^2$에 대하여 402g/$cm^2$로 증가(增加)하였다. 회분제거공정(灰分除去工程)을 12시간(時間) 수침상태(水浸狀態)로 진탕함으로서 회분(灰分)이 8.7%에서 2.7%로 감소(減少)하였고 gel강도(强度)는 원료한천(原料寒天) 22/$cm^2$에 대해 530g/$cm^2$로 증가(增加)하였다. 그러나 회분함량(灰分含量)의 변화(變化)가 3% 미만에서는 gel강도(强度)에 미치는 영향(影響)이 거의 없었다.

• 한국연초학회지
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• 제3권1호
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• pp.20-24
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• 1981

This experiment was carried out to determine the relationships between maturity and content of the chemical components in flue-cured tobacco. The results were as follows : 1) Among the chemical components, the contents of total nitrogen, ammonia nitrogen, total alkaloids, nicotine, total volatile base, petroleum-ether extract, crude fiber, crude ash, water soluble ash, and chlorine decreased significantly, and those of total sugar, reducing sugar, and starch increased as leaf maturity progressed until the stage of ripeness, but, afterwards, a reverse tendency appeared. 2) There was a significant relationship between maturity and the contents of chemical components, such as total nitrogen, protein nitrogen, ammonia nitrogen, total volatile base, and the correlation coefficients of them were -0.743, -0.789, -0.797, and -0.642, respectively.

• 한국가금학회지
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• 제27권1호
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• pp.1-6
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• 2000

An experiment was conducted to determine the nutritional values and variations of food wastes according to seasons and sources. Food wastes were sampled monthly from Feb. to Aug. at gathering sites from home kitchens, school restaurants and Korean food restaurants. chemical analyses revealed that crude fiber and NaCl contents were in the range of 5.41∼10.36 and 3.67∼5.40%, respectively, and the variations were especially high in summer. Ash content was highest in spring. With regard to the sources, the wastes from Korean food restaurants was highest in ash, calcium and phosphorus. On the other hand, crude fiber and fat were highest in the waste from house kitchens and NaCl in those from school restaurants.

• 한국식품영양과학회지
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• 제29권2호
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• pp.188-192
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• 2000

To obtain basic information for the quality evaluation, the introduced or domestic sesame seeds were investigated to measure proximate components (crude protein, ash, mineral and oil) and isolated by preparative HPLC system for lignan contents. Although crude protein contents were the highest in Sudan sesame seeds, lipid, ash and mineral contents were not significantly(p<0.05) different between introduced and domestric sesame seeds. Unsaturated fatty acids such as oleic and linoleic acids were the highest in the domestic sesame seeds. The Mg content of domestic sesame seeds also was larger than that of introduced sesame seeds. A Ca content of domestic sesame seeds, however, was significantly (p<0.05) lower than that of China. Lignan contents, the most important component known as antioxidant, were significantly (p<0.05) higher in domestic sesame seeds than other sesame seeds tested. Our findings suggest that domestic sesame seed has the best quality in terms of the functional components.

• 한국수산과학회지
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• 제50권3호
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• pp.270-277
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• 2017

This study was carried out to investigate seasonal changes in body composition in Boleophthalmus pectinirostris in Korea. B. pectinirostris collected in Gangjin, Jeonnam, consisted of 58.7-75.8% moisture content, 16.1-17.6% protein, 0.8-3.4% crude lipids, and 1.3-3.6% crude ash. Livers consisted of 15-17% moisture content, 14.0-16.8% crude protein, 34.4-71.2% crude lipids, and 0.5-1.2% crude ash. Calcium, iron, potassium, etc., content in B. pectinirostris muscle averaged 267.5-599.8 mg/100 g, 1.98-28.3 mg, 160.7-327.9 mg, 20.6-60.2 mg, 0.4-2.2 mg, 0.23-0.46 mg, 66.5-192.9 mg, and 1.32-3.8 mg, respectively. (Please clarify: the list of measured values must correspond directly with what was measured, not just "etc.") The major amino acids in B. pectinirostris muscle, in proportional order, were glutamic acid, isoleucine, and leucine; whereas the major amino acids in the liver were glutamic acid, lysine, aspartic acid, and leucine. The major saturated fatty acids in the muscle were palmitic acid (15-19%) and stearic acid (8-11%). The major monoenes and polyenes were palmitoleic acid (C16:1) and oleic acid (C18:1), and EPA and DHA, respectively. The major saturated fatty acids and polyenes in the liver were the same as in muscle, but the monoenes were palmitoleic acid (C16:1) and cis-10-hepta-decenoic acid (C17:1). Seasonal changes in B. pectinirostris body composition may be attributable to differential accumulation of fat and nutrients in comparison to the spawning and hibernation period.

• 동아시아식생활학회지
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• 제12권1호
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• pp.32-37
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• 2002

상주둥시 감잎의 이용성 증대를 위하여 성장시기 별 감잎의 유용성분 함량을 조사하여 감잎의 적절한 채취시기를 결정하기 위한 기초연구를 수행하였다. 감잎의 수분함량은 새잎이 나기 시작하여 성장초기인 5월 5일경에는 79.65%를 보이다가 성장함에 따라 꾸준히 감소하는 경향을 나타내었다. 조지방과 조섬유 및 회분함량은 감잎이 성장함에 따라 다소 증가 하였으며 조단백질은 큰 변화를 나타내지 않았다. 감잎의 유리당은 sucrose, glucose, fructose 및 raffinose의 4종류가 분리 확인되었으며 sucrose 함량이 가장 높았으며 glucose와 fructose는 비슷하였고 raffinose는 미량 존재하였다. 비휘발성 유기산은 oxalic acid, levulenic acid, magic acid 및 citric acid의 4종류가 분리 확인되었다. 감잎에 함유되어 있는 구성아미노산을 분석한 결과는 총 17종의 아미노산이 동정되었는데 주요한 아미노산은 glutamic acid, aspartic acid, leucine, phenylalanine 및 valine 순으로 높게 나타났다. 수용성 탄닌과 vitamin C 함량은 감잎이 성장함에 따라 계속적으로 증가하였으며 6월 20일 이후에는 감소하였다.

• 한국작물학회지
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• 제53권3호
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• pp.339-346
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• 2008

현미, 쌀보리, 옥수수, 고구마작물의 전분 함량과 일반성분 함량분석이 에탄올 생산에 미치는 영향을 조사하였다. 1. 단순 회귀분석 결과에 의해서 각 원료에서 전분 함량이 에탄올 생산량에 유의하게 영향을 주는 것으로 나타났는데, 전분 함량이 높을수록 에탄올 생산이 증가하였다. 2. 쌀보리의 경우 단백질 함량이 낮을수록 에탄올 생산이 많이 되는 것으로 나타났으며, 특이하게도 조섬유의 경우는 단백질 함량과 반대로 조섬유 함량이 높을수록 에탄올 생산이 높았다. 3. 현미의 경우, 회분 함량이 높을수록 에탄올 생산이 낮게 나타났다. 4. 고구마의 경우, 수분 함량이 다른 원료에 비하여 상대적으로 뚜렷이 높았으며, 수분 함량이 높을수록 에탄올 생산량은 낮아지는 것으로 분석되었다. 5. 건조 전 작물 중량을 기준으로 할 때 가장 높은 에탄올 생산수율은 현미에서 나타났고, 이중에서도 다산 현미가 439.3 liter/ton으로 가장 높았고, 그 다음 옥수수 그리고 보리의 순이었으며, 수분함량이 높은 고구마의 경우 전분함량이 상대적으로 낮아 에탄올 생산량이 낮게 분석되었다. 6. 건조 후 작물 중량 기준 시에는 건미 고구마가 530.6 l/ton으로 가장 높았고, 그 다음이 다산 현미 등의 현미, 정미 및 바이오미의 고구마, 옥수수, 보리의 순이었다. 7. 단위면적당 에탄올 생산량 성적을 살펴보면 현미가 평균 2560.0 l/ha, 쌀보리가 평균 1523.6 l/ha, 옥수수가 평균 2992.3 l/ha, 고구마가 평균 4169.1 l/ha로 나타났으며, 이중에서 건미 고구마가 5115.7 l/ha로 가장 높은 단위면적당 에탄올 생산량을 보였다.

• 한국초지조사료학회지
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• 제8권2호
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• pp.128-134
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• 1988

This experiment was carried out to compare chemical composition of corn-cowpea inter cropping and corn monocropping plants at different harvestion time and obtained the following results. 1. In both cropping systems, the contents of crude fat and nitrogen free extract (NFE) were significantly increased (P<0.01), while that of crude protein crude fiber and crude ash were decreased (P<0.01) with each harvesting time. 2. The acid detergent fiber (ADF) and crude fiber contents were decreased same patterns in growing period, however, according to maturing of corn ears the difference between ADF and crude fiber contents reduced. 3. At mature stage, crude protein yields per 10a in corn monocropping and corn-cowpea intercropping system were 127.6kg and 152.1kg, respectively. The difference of crude protein content between corn-cowpea intercropping and corn monocropping system was 19.2%. 4. TDN yields of each cropping system, at mature stage, obtained similar results and TDN yields per 10a of corn monocropping and corn-cowpea intercropping system were 1006.1kg and 990.1, respectively. 5. Conseqently, corn-cowpea intercropping system could be increased protein yield without decreasing of dry matter yield in comparison with corn monocropping system.