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오일남(Il-Nam Oh),김정은(Jung-Eun Kim),곽지윤(Ji-Yoon Kwak),조혜진(Hye-Jin Jo),유민지(Min-Jee Yoo),정다한(Da-Han Jung),김연미(Yeon-Mi Kim),박규빈(Kyu-Been Park),누엔푸끙(Phu-Cuong Nguyen),박종태(Jong-Tae Park) 한국식품과학회 2018 한국식품과학회지 Vol.50 No.4
산채류의 생리활성에 대한 소비자 관심이 증가함에 따라 산채류의 소비가 늘고 있지만 아직 수확시기 외에는 신선한 산채의 섭취가 어려운 실정이다. 특히 바쁜 현대인들의 직접적인 조리는 더욱 어렵기 때문에 가공식품으로의 이용이 증가하고 있다. 본 연구에서는 주요 산채작물인 참취의 재배 방법에 따른 품질비교와 데치기 처리 전후의 물리화학적 특성 변화를 분석하였다. 노지재배 참취는 시설재배에 비해 총 페놀성 화합물 양은 물론 산화방지능도 우수한 것으로 나타났다. 플라본올 중에서는 특히 퀘세틴이 시설재배에 비하여 5배 이상 높은 것으로 나타났다. 데치기 처리 시 경도와 영양성분, 기능성성분의 감소를 보였으나 그 변화 정도에 있어 재배방법에 따른 차이는 뚜렷하지 않았다. 색도의 경우 노지재배 참취가 시설재배에 비하여 확연히 진한 색을 나타내었는데 데치기 전후의 색도변화는 두 시료 모두 크지 않은 것으로 나타났다. 자유당 함량은 노지재배 참취가 두 배 가량 많은 것으로 나타났는데, 특이적으로 엿당은 검출되지 않았다. 결과를 종합하여 보면, 노지재배 참취의 영양적 가치가 시설재배에 비해 월등히 높은 것으로 판단되며 데치기 처리에 따른 성분변화와 색도변화 양상은 재배방법에 따른 차이가 뚜렷하지 않은 것으로 나타났다. Consumption of wild edible greens (WEG) has risen in Korea recently, and processing of WEG at greenhouses is increasing. In this study, we investigated chamchwi (Aster scaber Thunb), a major WEG, to assess the effect of growth conditions on nutritional quality and blanching process. Field-grown chamchwi had 1.5-2-fold more total phenolic compounds and anti-oxidative capacity than the house-grown one. Among functional compounds, quercetin was significantly higher (about 5-fold) in the field samples (approximately 430 μg/g fresh weight) than in the house samples. Soluble sugars in field-grown chamchwi were 2-fold higher than in the house samples. For both the samples, blanching process decreased chamchwi quality significantly, but the degree of loss for each component was different. Consequently, field-grown chamchwi exhibited superior nutritional quality than greenhouse-grown one, and blanching process resulted in a similar decrease of nutritional quality in both the samples.
계절, 부분, 색의 영향에 의한 양배추의 유리 아미노산 함량 변화
오일남(Il-Nam Oh),최승현(Seung-Hyun Choi),박수형(Suh-Young Park),임용표(Yong-Pyo Lim),안길환(Gil-Hwan An) 충남대학교 농업과학연구소 2011 농업과학연구 Vol.38 No.1
The contents of free amino acid in cabbage cultivars originated from China and Korea were measured to determine the quality for taste and nutrition. The experimental variables were season (spring-sowing and fall-sowing), leaf position (inside and outside), and the cabbage color (green and red). Eighteen free amino acids were detected at the range of 0-38 ㎎/g dry weight. The most abundant amino acid was serine(0-128 ㎎/g). Alanine, aspartate, glutamate, asparagine, histidine, and proline were relatively rich at 2-12 ㎎/g dry weight. Glycine were significantly increased in spring-sowing cabbages by 2-fold but proline was reversely decreased by 7-fold. The inside parts of cabbages contained significantly more alanine, glutamate, glycine, isoleucine, serine, and valine than the outside ones. The higher contents of isolecuine, leucine, proline, and valine were observed in the red cabbages than the green ones. The significant cross effects of season-color and position-color were also observed, indicating the red and the green cabbages were differently affected by season and tissue position.
이왕희,오일남,최승현,박종태 한국식품과학회 2021 Food Science and Biotechnology Vol.30 No.10
Food authenticity is one of the largest concernsin recent days. As kimchi has been a global food, its productionorigin has been important issue, particularly due tothe large import from China. Among the potential methods,electronic nose which can measure volatile compounds infoods is considered to be a powerful device for identifyingcountry of production. This study is to classify 69 kinds ofkimchi produced in South Korea (39) and China (30) byanalyzing volatile compounds in kimchi using electronicnose-mass spectrometry. Two widely used multivariateanalyses, discriminant function analysis and principalcomponent analysis, were used. Results showed that bothmultivariate analyses can completely separate Korean andChinese kimchi using 10 kinds of molecular weightsamong 10–160 amu. The results indicate that the volatilecompounds in kimchi are a suitable target to determine thegeographical origin of kimchi.
이왕희,최승현,오일남,심준용,이광식,안길환,박종태 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.3
An electronic nose-mass spectrometry (EN-MS) that profiles volatile compounds is a candidate device for identifying the geographic origin of cultivation of agricultural products when an adequate algorithm is derived. The objectives of this study were to apply two types of multivariate analysis, discriminant function analysis (DFA) and principal component analysis (PCA), to the volatile compounds detected by an EN-MS for the geographic classification of Chinese cabbage cultivated in Korea (42 samples) or in China (29 samples). DFA showed that Chinese cabbage from Korea were completely separable from those originating in China with 12 volatile compounds among the 151 detected. PCA revealed that Chinese cabbage data fell into two completely separable origins of Korea and China. This is the first study involving EN-MS data of volatile compounds with multivariate statistics to discriminate the geographical origin of Chinese cabbage, with further applications for other agricultural products.