Application of waterborne rosin polymer coating for preserving strawberry during storage,Journal of Food Safety

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Application of waterborne rosin polymer coating for preserving strawberry during storage
Journal of Food Safety ( IF 1.9 ) Pub Date : 2020-03-21 , DOI: 10.1111/jfs.12791
Jia‐li Xu _{1,

2} , Hong Gao _{1,

2} , Hai‐bo Zhang _{1,

2} , Shu‐feng Yao _{1,

2} , Dan Wang _{1,

2} , Shi‐bin Shang _{1,

2}

Affiliation

A water‐soluble rosin polymer (RP) was prepared via polymerization of rosin and maleic anhydride. The structure of the RP was characterized via Fourier‐transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, and gel permeation chromatography. The RP was used as a film‐forming agent on strawberries to improve their postharvest quality at room temperature. The effectiveness of this treatment was evaluated based on the impact of the RP coating on the following parameters: weight loss, total soluble solids (TSS), firmness, respiration rate, malondialdehyde (MDA) content, anthocyanin content, and total phenolic content (TPC). The samples that coated with the RP exhibited delayed respiration and loss of firmness compared with the control. Correspondingly, the samples coated with the RP had lower weight loss (14.78%), MDA content (8.13 × 10⁻² μmol/g), anthocyanin content (37.86 mg/100 g), TPC (3.41 × 10⁻⁴ mg/100 g), and higher TSS (8.09%). The results indicated that the RP preservative could effectively maintain the freshness of fruits.

中文翻译：

水性松香聚合物涂料在草莓保鲜中的应用

通过松香和马来酸酐的聚合反应制备了一种水溶性松香聚合物（RP）。RP的结构通过傅立叶变换红外光谱，质子核磁共振光谱和凝胶渗透色谱进行了表征。RP用作草莓上的成膜剂，以提高其室温下的采后质量。根据RP涂层对以下参数的影响评估该处理的有效性：重量减轻，总可溶性固形物（TSS），硬度，呼吸速率，丙二醛（MDA）含量，花色苷含量和总酚含量（TPC））。与对照相比，涂有RP的样品表现出呼吸延迟和硬度下降。相应地，RP涂层样品的失重较低（14.78％），^-2微摩尔/克），花色素苷含量（37.86毫克/ 100克），TPC（3.41×10 ^-4毫克/ 100克），和更高的TSS（8.09％）。结果表明，RP防腐剂能有效保持水果的新鲜度。

更新日期：2020-03-21

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