Evaluation Of Fruit Quality And Analysis Of Heavy Metals Elements Contents In Blueberry And Other Two Kinds Of Small Fruit

Three kinds of small fruit including blueberry,black currant and raspberry were collected in the small fruit-producing areas in some provinces.Determinations of quality and heavy metals in the three kinds of small fruit were studied in this paper.The sensory quality and nutrition characters of the three kinds of small fruit were analyzed and compared.And we analyzed for the concentration of Pb,Cd,Hg,As to estimate the pollution.We also discussed the relation between heavy metal content in berries and that in soil.This paper also discussed the correlation among various heavy metals element contents in the orchard soil and between the soil's and fruit's content.These studies provided a theoretical foundation for constitute the regulation of the three kinds of small fruit production.The main results were as follows:1 The sensory quality of the three kinds of small fruit was all good.About blueberry, 'Bluecrop','S₁₃','Coville' and 'Patroit' were bigger than other kinds of blueberry.The peel of 'Northcountry','Bluecrop','Blomidon','Northsky','Powerblue'and 'Patroit' had more fruit power,so the color of peel about these kinds blueberry were bright blue.'Brodrop' were the best variety about sensory quality in black currant.2 The flavor quality was evaluated by the content of sugar and acid in berries.Low-bush blueberry was better than half-high blueberry,high-bush blueberry and Rabbit-eye blueberry. The content of acid in black currant was higher and the berries of black currant tasted astringent.Red raspberry was better than yellow and black raspberry.3 The content of Vc showed that black currant＞raspberry＞blueberry.The content of protein and SSC in black currant was higher than blueberry and raspberry.4 There were many mineral elementals which were good for people in the three kinds of small fruit.The content of K and Ca were higher.Especially the kinds of black currant 'Fertodi' and 'Ben Lomond' had the higher content of K in these tested small fruit.They were 3 times than blueberry.5 The content of heavy metals in berries showed that the content of Cd in raspberry 'Boyne' from Shenyang were higher than the industry standard,the others all measured up the standard.6 The content of heavy metals in soil.From the comprehensive pollution index of all samples using Secondary Standard of GB15618-1995 as assessment standard,the comprehensive pollution index of sample Jilin Agriculture University was more than 0.7 and less than 1, which indicated that pollution degree was on alert,pollution level was still clean.The other samples7 There were correlation among various heavy metals element contents in the orchard soil.As and Cd,Hg had evident correlation and other heavy metals element didn't have evident correlation in the soil of JLAU.Every heavy metals element had evident correlation in the soil of Zhuanghe.Only Cd and Pb had extremely evident correlation in the soil of Weihai.8 There was correlation between the soil's and the fruit's heavy metals element contents.But the correlation was different between soil and fruit in different place.