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자료유형
학술저널
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한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY Vol.47 No.4
발행연도
2006.8
수록면
165 - 173 (9page)

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After complete maceration of garlic (Allium sativum L.) cloves, green pigments were occasionally formed. The green pigment formation was evaluated with five garlic cultivars stored at 0, 10, and 20℃. Regardless of the cultivar, harvest time, and sprouting, the greening was observed only in garlics stored at 0 and 10℃ over 4 and 5 months, respectively, whereas garlics stored at 20℃ did not develop greening under all the experimental conditions. Three major flavor precursors in garlic cloves, (+)-S-methyl-(MCSO), (+)-S-2-propenyl (or allyl)-(2-PRENCSO, alliin), and trans-(+)-S-1-propenyl-L-cysteine sulfoxide (1-PRENCSO) were detected in this experiment. 1- and 2-PRENCSO gradually increased, but MCSO decreased with storage time at all the temperatures and in all the cultivars examined. 1-PRENCSO was detected only in greening garlics stored at 0 and 10℃ for over 4 and 5 months, respectively. Through the addition of three flavor precursors individually into the homogenates of greening garlic cloves, the possible roles of 1- and 2-PRENCSO for inducing greening were also confirmed with highly positive correlations between greening and their concentrations, r² = 0.92 and r² = 0.77, respectively, showing an increased absorbance at 590 ㎚. On the other hand, the homogenates of non-greening garlic cloves were not greened by the addition of flavor precursors, preserving their creamy colors. An alliinase inhibitor, hydroxylamine at 100 mM completely inhibited greening. Greening was finally considered as one of the various physiological responses that could be induced by prolonged low temperature storage after harvest. It was associated with an alliinase activity and the increased levels of flavor precursors, particularly 1- and 2-PRENCSO on which alliinase acted when garlic cells were finely disrupted.

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Abstract
Introduction
Materials and Methods
Results and Discussion
Conclusion
Acknowledgement
Literature Cited

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