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양수분 흡수율과 양이온 비율에 의한 배추과 엽채류 수경 배양액 개발
최기영(Ki Young Choi),양은영(Eun-Young Yang),박동금(Dong-Kum Park),김영철(Young Chul Kim),서태철(Tae Cheol Seo),윤형권(Hyung Kweon Yun),서효덕(Hyo Duk Seo) (사)한국생물환경조절학회 2005 시설원예‧식물공장 Vol.14 No.4
본 실험은 작물의 양수분 흡수율에 근거하여 배추과엽채류 수경재배에 적합한 배양액을 개발하고자 수행 되었다. 원예연구소 배양액(NSH액) 1배액을 기준으로 1/2배액, 1배액, 3/2배액으로 25일간 담액 수경재배 했을 때 청경채와 겨자채는 3/2배액, 케일은 1배액에서 생육이 좋았다. 작물의 양수분 흡수율을 산정하여 얻은 평균 양이온 비는 K 49.5%, Ca 35.8%, Mg 14.7% 였으며, 배추과 작물에 적합한 배양액 N 14, P 3, K 6.8, Ca 4.8, Mg 2 meㆍL?¹을 개발하였다. 개발 배양액을 평가하기 위해 2003년 9월부터 2004년 10월까지 공시 작물을 4회 재배하였다. 개발 배양액에서 작물을 재배했을 때 빠른 상대생장률과 함께 생육이 1.1~2.5배, 비타민 C 함량은 1.06~1.52배 증가하였다. 개발 배양액에 적합한 작물로는 겨자채 ‘Asia curled’, ‘Asia redcurled’ 및 ‘Pamagreen’, 케일 ‘TBC’, ‘Portugal’ 및 ‘Manchu collard', 잎브로콜리 ‘New green’, 청경채, 방울다다기양배추 ‘Green king’와 ‘Red king’, 홍채태, 쌈추 등으로 생육과 항산화 성분인 비타민 C 함량 증가를 통해 기능성 엽채류 생산이 가능하였다. This study was conducted to develop the suitable nutrient solutions for variable Cruciferae leafy vegetables. 1/2, 1 and 3/2 strength of nutrient solution recommended by National Horticultural Research Institute were supplied to plants in deep flow technique systems during 25 days. The growth of pak-choi and leaf mustard 'Asia curled' was highest in the 3/2 strength, and kale 'TBC' in the 1 strength. Mean cation ratio of nutrient solution for pak-choi, leaf mustard and kale was K 49.5%, Ca 35.8% and Mg 14.7%, which was obtained by calculating the uptake rates of water and nutrients. Suitable composition of the nutrient solution for Cruciferae leafy vegetables was N 14, P 3, K 6.8, Ca 4.8, Mg 2 meㆍL?¹. To examine the suitability of nutrient solution developed for Cruciferae vegetables (NSC), plants were grown 4 times from Sep. 2003 to Oct. 2004. When plants were grown in NSC, relative growth rate increased 1.1 to 2.5 times and vitamin C content 1.06 to 1.52 times. The proper plants to apply NSC for functional leaf vegetable production were leaf mustard 'Asia recurled', 'Redcurled' and 'Pamagreen', kale 'TBC', 'Portugal' and 'Manchu collard', leaf broccoli 'New green', pak-choi, baby cabbage 'Red king' and 'Green king', flowering red chinese cabbage and Korean cabbage.
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Kim, Gun-Hee 한국식품위생안전성학회 2003 한국식품위생안전성학회지 Vol.18 No.4
S-methylmethionine(vitamin U)은 천연 아미노산의 일종으로 Brassica vegetables 중 양배추에 풍부하게 함유된 항위궤양성 인자로 알려져 있다. 본 연구에서는 우리나라에서 많이 소비되고 있는 배추를 대상으로, 건조방법을 달리하여 품종 및 부위별로 vitamin U 함량 변화를 조사하였다. 건조방법에 따른 함량변화는 동결건조 처리군이 vitamin U 최대 보존 효과를 보여주었다. 부위별로는 전체적으로 잎 부분(leaf parts)이 줄기(mid-rib)보다 최소 1.1배, 최고 21.2배 높았으며 그중에서 배추 잎 바깥쪽(outward parts)에서 가장 높은 vitamin U 함량을 나타내었다. 주요 아미노산의 함량은 vitamin U와 같이 잎 부분이 전반적으로 높았으며, 특히 alanine과 threonine이 가장 풍부한 아미노산으로 조상되었다. Vitamin U의 전구물질인 methionine의 함량은 건조방법에 따라 큰 차이를 보여주었으나, vitamin U 함량에 미치는 영향은 뚜렷한 상관관계를 보이지 않았다 S-methylmethionine, vitamin U levels were affected by cultivars, parts of Korean Chinese cabbages, and drying methods. Among drying conditions, freeze drying method appeared the best condition to maintain vitamin U content compared to oven and air drying methods. In the case of Korean Chinese cabbages, outward leaves have high levels of chlorophyll and fiber. From this study, the outward parts contained high levels of vitamin U in two cultivals. Leaf parts were 1.1-21.2 times higher in vitamin U levels than midribs in both cultivars. This difference was shown most distinctively in freeze dried outward parts of Winter Pride cultivar. Like vitamin U, free amino acids also showed much higher levels in leaves. Levels of amino acids showed irregularly changing patterns at different parts and cultivars of Korean Chinese cabbages with various drying methods. Alanine and threonine appeared relatively abundant amino acids in most parts of samples. Since no distinctive trends were observed in this result, it seems no relationship exits between amino acids and vitamin U levels. Levels of methionine in different parts and cultivars of Korean Chinese cabbages dried with various methods did not show clear relationship with the level of vitamin U. Moreover, methionine was not detected in freeze dried outward leaf parts which were the highest parts of vitamin U levels in Winter Pride 55 days cultivars. There were similar levels of methionine between oven and freeze drying. Sample prepared by air drying showed significantly lower levels than those by oven and freeze drying. Methionine as a precursor of vitamin U, may not play a role in an in crease of vitamin U during drying of Korean Chinese cabbgages.
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The Antibacterial Properties of Filtrates from Chinese Cabbage Kimchi*
차성수,이정선,곽민규 한국식품보건융합학회 2023 식품보건융합연구 (KJFHC) Vol.9 No.6
Lactobacillus plantarum and Leuconostoc mesenteroides are crucial functional starters and predominant isolates in a wide range of fermented foods, particularly kimchi, whose constituents exhibit bioactive properties. We previously developed a methodology using anion exchange resins to purify peptidyl compounds from Lb. plantarum LBP-K10. Antibacterial cultures of Lb. plantarum LBP-K10 were obtained from the respective cultures' supernatants and filtrates. However, conclusive evidence of the efficacy of kimchi filtrates in eradicating pathogenic bacteria is lacking. We aimed to simulate the potential effects of antibacterial filtrates that contained antibacterial compounds which were derived from cultures of Lb. plantarum LBP-K10. We acquired the kimchi filtrates using a combination of centrifugation and filtration methodologies, without the requirement for inoculation. The filtered liquid from Chinese cabbage kimchi, inoculated with Lb. plantarum LBP-K10 as a starter culture, and the non-inoculated liquid from Chinese cabbage kimchi (referred to as CCK and CCKRef, respectively) were were examined. CCK demonstrated greater inhibitory activity and a more significant bactericidal effect against the bacterial indicator strains. The minimum inhibitory concentration demonstrated comparable outcomes in tests against both Gram-positive and Gram-negative bacteria. This research offers a groundbreaking examination that displays the effectiveness of profiling peptidyl compounds within kimchi filtrates for curing bacterial infections.
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