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黑芥子酶能够催化硫代葡萄糖苷水解生成葡萄糖,进一步通过己糖激酶(HK)和葡萄糖-6-磷酸脱氢酶(G6PDH)依次将葡萄糖催化生成葡萄糖酸磷酸盐,同时伴随NADP还原为NADPH,NADPH可通过1-mPMS递氢作用,还原WST-1生成甲臜(Formazan),产物在450 nm处具有特征吸收峰,通过吸光值变化即可定量检测硫代葡萄糖苷的含量。
Myrosinase catalyzes the hydrolysis of glucosinolates to produce glucose. The glucose is then sequentially catalyzed by hexokinase (HK) and glucose‑6‑phosphate dehydrogenase (G6PDH) to generate 6‑phosphogluconate, with concomitant reduction of NADP⁺ to NADPH. The NADPH, via electron transfer mediated by 1‑mPMS, reduces WST‑1 to formazan, a product that exhibits a characteristic absorption peak at 450 nm. The glucosinolate content can be quantitatively determined by monitoring the change in absorbance.