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Abstract ▼ AI-Helper

This study was conducted to figure out the levels of sulforaphane and other antioxidants among broccoli cultivars and their plant parts. The contents of sulforaphane and other antioxidants were estimated by GC/MS, HPLC and UV-spectrophotometer. Among the cultivars tested ‘Nokjae’ contained higher su...

This study was conducted to figure out the levels of sulforaphane and other antioxidants among broccoli cultivars and their plant parts. The contents of sulforaphane and other antioxidants were estimated by GC/MS, HPLC and UV-spectrophotometer. Among the cultivars tested ‘Nokjae’ contained higher sulforaphane level than ‘Grace’ and its content varied depending on different maturity stages of broccoli; immature, mature and overmature stages. In the case of ‘Nokjae’, the highest sulforaphane level was detected at mature stage as compared to the other two stages. The ascorbic acid contents in both cultivars were found to be higher in the overmature stage than in either immature or mature stage. However, β-carotene contents were not in accordance with the maturity stages, its highest level was detected at the mature stage in both cultivars, whereas the lowest at the immature stage. Chlorophyll contents were also varied depending on the maturity stages. The highest level was detected at the overmature stage in ‘Nokjae’ and at the mature stage in ‘Grace’, while its lowest level was observed at the immature stage in both cultivars. Among the three parts of broccoli tested, florets of ‘Nokjae’ contained the highest level of sulforaphane, whereas leaf exhibited a very low level. The stalk of broccoli had the highest level of ascorbic acid; in contrast, the leaf contained high level of β-carotene and chlorophyll. In summary, our data showed that sulforaphane contents of broccoli were the highest in the florets at the mature stage, whereas ascorbic acid, β-carotene and chlorophyll levels were higher in leaves and stalks of broccoli.

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