Abstract
By using cut potato tuber treated with alkyl halides, experiments were carried out to investigate influences of halogens on rishitin induction and browning in the potato tissues. The results indicated that rishitin was produced higher in tuber tissues treated with alkyl bromides as ethylene dibromide and dibromopropane than these treated with alkyl chloride as ethylene dichloride and dichloropropane. And then, rishitin content was very higher in tuber tissues treated with alkyl halides of having dihalogens than those of having monohalogen. On the contrary, no rishitin was detected in tuber tissues treated with allyl amine and allyl alcohol. On the other hand, there was no relation between the amount of rishitin accumulation and browning intensity in tuber tissues by used alkyl halides.
Tuber tissues treated with alkyl halides, reached maximal rishitin content about 4 days after treatment when treated with EDB and DBCP at concentration of 0.04M, but rishitin induction was strongly inhibited when treated with those at concentration of 0.25M.
