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Optimization of Enzymatic Hydrolysis Conditions of Glucosinolates from Carica papaya Seeds by Response Surface Methodology

LI Wen-zhao, DU Yi-deng, ZHU Hua-ping*, SHI Zong-yi, CHI Ying-zhou, RUAN Mei-juan   

  1. College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
  • Online:2014-09-25 Published:2014-09-17
  • Contact: ZHU Hua-ping

Abstract:

The enzymatic hydrolysis of glucosinolates (GS) from Carica papaya seeds was optimized by response surface
methodology with Box-Behnken design (BBD). The resulting isothiocyanates were identified by gas chromatography-mass
spectrometry (GC-MS). The results showed that enzyme buffer solution pH and hydrolysis time had significant effects on
the yield of isothiocyanates, whereas enzymatic hydrolysis temperature had no significant effect. The optimal hydrolysis
conditions were found to be hydrolysis at 27 ℃ for 40 min in a buffer solution at pH 4.8. Under the optimized conditions,
the yield of isothiocyanates was 13.5‰. GC-MS analysis showed that only one isothiocyanate—benzyl isothiocyanate was
detected in the hydrolysate.

Key words: Carica papaya seed, glucosinolates, enzymatic hydrolysis, isothiocyanates

CLC Number: