ABSTRACT: Broccoli was used as raw material to determine sulfur content of radish in three different parts of broccoli flower, stem and leaf by high performance liquid chromatography (HPHC). Radish in the samples dehydrated by microwave drying equipment (wave power 900W, time 10min) and electric blast drying equipment (1000 drying temperature is 90 C, time is 2h) were compared and analyzed. The effects of microwave drying on the content of sulforaphane in broccoli were studied.
The results showed that the content of sulfur radish in different parts of broccoli dried by microwave was (152.50 t 0.27), (82.75 (1.28) and (23.720.18 mg kg, respectively. The content of sulfur radish in broccoli stems was about twice and seven times of that in broccoli leaves dried by electrothermal blast, and the content of sulfur radish in different parts of broccoli was the same. It is the highest in stems, 56.321.37mgkg, and (85.04 + 1.13) mgkg and (53.262.78) mgkg respectively in flowers and leaves.
Microwave drying and electric blast drying, broccoli leaf sulfur content surging greater, the stem and flower is not affected much, the leaves should be used electric blast drying stems and flowers can be used either wave thousand drying, or can also be used electric blast thousand drying keywords: wave thousand drying; broccoli; different parts; sulfur content of radish, contrast points The difference of sulforaphane content in broccoli samples obtained by microwave thousand drying (wave power 900W, time 10min) and electrothermal blast thousand drying (thousand drying temperature 90, time 2h) was analyzed. The effect of microwave thousand drying on sulforaphane content in broccoli was studied.
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