摘要
以‘燕昌’板栗为试材,研究采后不同浓度NaClO水浴处理对板栗贮藏生理代谢的影响。结果表明:NaClO水浴处理使板栗呼吸强度和淀粉酶活性降低,乙醇脱氢酶(ADH)活性升高;NaClO水浴处理使板栗内部PPO活性降低,对外部PPO活性的影响与NaClO浓度相关,1000mg.L-1NaClO处理使板栗外部PPO活性一直高于对照,而100mg.L-1NaClO和500mg.L-1NaClO处理使外部PPO活性降低;NaClO水浴处理使板栗内部POD活性降低,对外部POD活性的影响与NaClO浓度相关,1000mg.L-1NaClO处理使板栗外部POD活性增加,其他处理在贮藏前期降低了外部POD活性,但在后期使外部POD活性升高;100mg.L-1NaClO和500mg.L-1NaClO处理使板栗SOD活性升高,而1000mg.L-1NaClO处理则使SOD活性降低;NaClO处理板栗的CAT活性变化趋势与对照相似,但提高了CAT活性。
In this paper, the effects of different concentrations （ 100, 500, 1 000 mg·L^-1 ） of sodium hypochlorite solution water-curing treatment on physiological changes of chestnut （ Castanea moUissima cv. Yanchang） were studied during postharvest MA storage. The results were as follows： 1 ） NaClO water-curing treatment could decrease respiratory intensity and amylase activity, but increase ADH activity of chestnut; 2） NaClO water-curing treatment could inhibit intra-PPO activity, extra-PPO activity was related with concentrations of NaClO solution. The extra-PPO activity of chestnut treated with 1000 mg·L^-1 NaClO solution was higher than that of CK at all times. However, 100 mg·L^-1 or 500 mg·L^-1 NaClO solution water-curing treatment made extra-PPO activity lower than CK. 3） NaClO water-curing treatment could restrain intra-POD activity, extra-POD activity was related with concentrations of NaClO solution. Extra-POD activity of chestnut treated with 1 000 mg·L^-1 NaClO solution was higher than that of CK. However, extra-POD activity was lower in the early storage and higher in the later treated with 100 mg·L^-1 or 500 mg·L^-1 NaClO solution. 4） SOD activities were higher than CK by 100 mg·L^-1 NaClO or 500 mg·L^-1 NaClO solution treatment, but SOD activity was lower than CK by 1 000 mg·L^-1 NaClO solution treatment. 5 ） There were no differences between NaClO water-curing treatments and CK on the changing trends of CAT activities, but CAT activity was improved by NaClO water-curing treatment.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2007年第2期37-42,共6页
Scientia Silvae Sinicae
基金
国家林业局"948"项目(2004-4-54)
关键词
板栗
次氯酸钠
水浴处理
呼吸强度
酶活性
chestnut
sodium hypochlorite
water-curing treatment
respiratory intensity
enzyme activity
