The study aimed toward the development of biocompatible and biodegradable polymeric films (starch-chitosan and starch-chitosan-cyclodextrin) with biologically valuable green tea leaf extract using an environmentally friendly integrated process of supercritical fluid extraction (SFE) and supercritical solvent impregnation (SSI). The SFE-SSI process parameters were selected through the initial estimation of the SFE parameters effect (temperatures 35 and 70 °C and the addition of co-solvents ethanol, ethanol/water, and water). The present early-stage work showed that an increase in temperature increased extraction yield (from 0.9 to 4.2%) and caffeine content while it decreased polyphenolic and pigment content as well as antioxidant activity and extract loading onto films (from 7.1 to 0.1%). The addition of co-solvents to sc-CO₂ had an adverse effect on extract yield, composition, and loading. The highest recorded total phenolic, flavonoid, chlorophyll A, and caffeine content in extracts were 136.5 mg GE/g, 22.7 mg RE/g, 8.1 mg/g, and 460.0 mg/g, respectively.

该研究旨在利用超临界流体萃取（SFE ）和超临界溶剂浸渍（SSI）的环保集成工艺，开发具有生物价值的绿茶叶提取物的生物相容性和可生物降解的聚合物薄膜（淀粉-壳聚糖和淀粉-壳聚糖-环糊精） 。SFE-SSI 工艺参数是通过对 SFE 参数影响的初步估计（温度 35 和 70 °C 以及添加共溶剂乙醇、乙醇/水和水）来选择的。目前的早期工作表明，温度升高会增加提取率（从 0.9％ 至 4.2％）和咖啡因含量，同时降低多酚和色素含量以及抗氧化活性和薄膜上的提取物负载（从 7.1％ 至 0.1％）。_{向sc-CO 2}中添加共溶剂对提取物产率、组成和负载量具有不利影响。提取物中记录的最高总酚、类黄酮、叶绿素 A 和咖啡因含量分别为 136.5 mg GE/g、22.7 mg RE/g、8.1 mg/g 和 460.0 mg/g。