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The metabolic changes of lutein, b-carotene and chlorophyll a during germination of the soybean (Glycinemax (L.) Merr.) sprout varieties, ‘Pungsannamulkong’ and ‘Bosug’, have been studied. Seeds were germinatedat 20 C with 80% humidity in the darkness and sampled at 2 day intervals for 10 days. Partial leastsquares (PLS) scores plot showed that the responses of three metabolites during germination were linearlylinked with each other except for day 2 in both varieties. PLS loading plots indicated that lutein contentin whole sprout and cotyledon was closely associated with germination in ‘Pungsannamulkong’while the chlorophyll a content in whole sprouts was highly linked with germination in ‘Bosug’. Heatmapanalyses revealed that lutein and b-carotene levels, but not those of chlorophyll a, accumulated in wholesoybean sprouts and cotyledon. While hypocotyls did not accumulate lipophilic pigments during germination,the accumulation of lutein and b-carotene in the cotyledons was greater in ‘Pungsannamulkong’than in ‘Bosug’ sprouts. In addition, the contents of lutein, b-carotene and chlorophyll a increased fromthose in the seeds. Overall, the metabolic changes of lutein, b-carotene and chlorophyll a during germinationare affected not only by variety but also by organ type.
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