Horticulture, Environment, and Biotechnology ( IF 2.4 ) Pub Date : 2021-03-01 , DOI: 10.1007/s13580-020-00331-w Wancai Zheng , Aygul Alim , Yujia Bai , Zuoshan Feng , Jianmei Zhang , Na Xia , Zeren Ding
Abstract
Postharvest dehydration temperature is important for the quality of grapes, especially the content of anthocyanin. Therefore, this article investigated the changes in the contents of total phenolic and anthocyanin compounds as well as the tissue microstructure of grapes. Furthermore, the correlation between the drying temperature and the total phenolic and anthocyanin compounds was analyzed. The results showed that the total phenol content was 1188.25 ± 37.32 mg/kg in the control group and 998.13 ± 52.28 mg/kg and 886.00 ± 12.33 mg/kg in the groups treated at 25 °C and 45 °C, respectively, with 60% mass loss. The microstructure of the grape peel showed shrinkage, rupture, and collapse with the disappearance of fine structures during dehydration at different temperatures. The drying temperature was positively correlated with the dehydration rate (p < 0.01, sig = 0.781), which was negatively correlated with the total phenolic content (p < 0.01, sig = − 0.985). Overall, the results provide a reliable scientific basis for the extraction and utilization of anthocyanins in grapes.
Graphic abstract
中文翻译:
采后脱水对葡萄显微结构和花色苷含量的影响
摘要
收获后的脱水温度对于葡萄的品质,尤其是花色苷的含量非常重要。因此,本文研究了总酚和花青素化合物含量的变化以及葡萄的组织显微结构。此外,分析了干燥温度与总酚和花青素化合物之间的相关性。结果表明,在25°C和45°C的温度下,对照组的总苯酚含量分别为1188.25±37.32 mg / kg和998.13±52.28 mg / kg和886.00±12.33 mg / kg,分别为60质量损失百分比。在不同温度下的脱水过程中,葡萄皮的微观结构显示出收缩,破裂和塌陷,而精细结构消失了。干燥温度与脱水率呈正相关(p <0.01,sig = 0.781),与总酚含量呈负相关(p <0.01,sig =-0.985)。总体而言,结果为葡萄中花色苷的提取和利用提供了可靠的科学依据。