从菜西瓜中提取果胶的最佳工艺研究

为确定从菜西瓜中提取果胶的最佳工艺条件,以山西省临汾市菜西瓜为材料,采用酸法进行了提取果胶的试验研究。正交试验结果表明:在萃取时间为45min的前提下,从瓜瓤中提取果胶的最佳工艺条件是加水量为原料重量的4倍,85℃下,添加原料重量0.3％的多聚磷酸钠,果胶得率可达2.03％;从外果皮中提取果胶,加水量为原料重量的4倍,75℃下,添加原料重量0.7％的多聚磷酸钠,果胶得率可达2.98％。     

西瓜彩珠饮料的研制

本文以西瓜汁、西瓜皮为原料,研究了西瓜彩珠饮料的成粒方法、稳定性及生产工艺,制得了色泽、风味独特的西瓜彩珠饮料。     

Genetic Transformation of Watermelon with Pumpkin DNA by Low Energy Ion Beam-mediated Introduction

The No.601 watermelon (citrullus lanatus) seeds were treated with 25 keV N+ implantation at the dosage of 7.8*10 ions/cm2 . After treatment, watermelon seeds were incubated with 380 *g/*l pumpkin (Cucubita, maxima Duch) DNA solution at 35* for 5 hours. By two-generations of selection and resistance screening at seedling stage, one transformed material was selected out, whose rind color is similar to that of the donor pumpkin and whose size of seeds is between that of the donor and the receptor. Using AFLP (amplified fragment length polymorphism) technique, two polymorphic DNA fragments were amplified. This primarily testified that the donor DNA fragments/gene were introduced into the receptor cell and integrated into the genomic DNA of the receptor.     

喷施NFC叶面肥对西瓜的增产效果试验研究

富力牌(NFC)叶面肥是采用先进技术从风化煤中提取出来的,以黄腐酸(FA)为主体的一种天然有机生物活性物质,经添加适量作物生长所需营养元素而成的新型高效叶面肥。为使其能尽快为农业持续稳定、高产高效作贡献,受健力宝南京金石科技实业有限公司委托,我们在江苏丘陵地区黄棕壤上进行了西瓜喷施NFC叶面肥的试验,现将有关结果报告如下: