Study on Changes of Total Phenolic Compounds in Beibinghong Grape in Different Picking Periods
In order to comprehensively evaluate the characteristics of Beibinghong grape,taking Beibing-hong grape(Vitis amurensis Rupr)which came from three sample points(sunny slope,shady slope,semi-sunny and semi-shady slope)in five different periods(T1,T2,T3,T4,T5)as the research object,the total phenol content of different parts of fruit in different harvesting periods was determined by Folin-Ciocalteau method in order to reveal the change of total phenol content,and the weight of single fruit and soluble solid content were also measured.The results showed that the maximum total phenol content of Beibinghong grape,in different slope T5 periods was 88.48 mg/g,88.06 mg/g and 78.34 mg/g respec-tively,significantly higher than that in other periods.The individual grain weight and soluble solid content increased with the extension of harvesting period.Therefore,it is determined that the optimum harvest date of Beibinghong grape,is T5.The study will provide certain theoretical basis for further control of total phenolic substances accumulation and fruit quality of grape wine during actual production.
NETL
NSTL
万方数据
维普
