采后三磷酸钠处理对枣果实贮藏品质和蔗糖代谢的影响。
Effects of trisodium phosphate treatment after harvest on storage quality and sucrose metabolism in jujube fruit.
机构信息
College of Food Science and Technology, Bohai University, Jinzhou, China.
National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou, China.
出版信息
J Sci Food Agric. 2019 Sep;99(12):5526-5532. doi: 10.1002/jsfa.9814. Epub 2019 Jun 17.
BACKGROUND
Trisodium phosphate (TSP), generally recognized as safe (GRAS), could control postharvest diseases and maintain fruit quality. However, changes of fruit quality and sucrose metabolism in harvested jujube after TSP treatment remain largely unknown. In the current study, jujube fruit (cv. sanxing) was used to study the effects of TSP on storage quality and sucrose metabolism during storage at 20 ± 2 °C with 40-50% relative humidity (RH).
RESULTS
The results showed that 0.5 g L TSP treatment reduced weight loss and reduced sugar content, suppressed the reduction of fruit firmness, maintained ascorbic acid (AsA) content and inhibited respiratory rate of jujube fruit. In addition, TSP treatment also reduced acid invertase (AI) and neutral invertase (NI) activities in sucrose metabolism in jujube fruit. Sucrose synthase-cleavage (SS-c), sucrose synthase-synthesis (SS-s) and sucrose phosphate synthase (SPS) activities were also suppressed by TSP treatment.
CONCLUSION
Treatment with TSP could effectively reduce enzymes activities in sucrose metabolism and maintain storage quality of jujube fruit during storage. © 2019 Society of Chemical Industry.
背景
三聚磷酸钠（TSP）通常被认为是安全的（GRAS），可以控制采后病害并保持果实品质。然而，TSP 处理后收获的冬枣果实品质和蔗糖代谢的变化在很大程度上尚不清楚。在本研究中，以冬枣（品种三兴）为试材，研究了 20±2℃、相对湿度 40-50%条件下 TSP 处理对贮藏期果实品质和蔗糖代谢的影响。
结果
结果表明，0.5 g·L-1 TSP 处理可减少失重和还原糖含量，抑制果实硬度下降，保持果实抗坏血酸（AsA）含量，抑制呼吸速率。此外，TSP 处理还降低了冬枣果实蔗糖代谢中的酸性转化酶（AI）和中性转化酶（NI）活性。蔗糖合酶裂解（SS-c）、蔗糖合酶合成（SS-s）和蔗糖磷酸合酶（SPS）的活性也受到 TSP 处理的抑制。
结论
TSP 处理可有效降低蔗糖代谢中酶的活性，保持冬枣果实的贮藏品质。 © 2019 化学工业协会。
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