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首页> 外文期刊>Fuel >Green tea (Camellia assamica) extract as an antioxidant additive to enhance the oxidation stability of biodiesel synthesized from waste cooking oil
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Green tea (Camellia assamica) extract as an antioxidant additive to enhance the oxidation stability of biodiesel synthesized from waste cooking oil

机译：绿茶（Camellia Assamica）提取物作为抗氧化添加剂，以提高由废物烹饪油合成的生物柴油的氧化稳定性

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Green tea (Camellia assamica) leaves extract as an antioxidant additive and its influence on the oxidation stability of biodiesel produced from waste cooking oil (WCO) has been studied. Camellia assamica extract can be used as an eco-friendly and non-toxic alternative of synthetic antioxidants used to enhance the oxidation stability of biodiesel. The extraction of antioxidants was performed in an oil bath at 60 degrees C for 4 h using ethanol as a solvent. Folin-Ciocalteu assay was used to determine the total phenolic content (TPC) of green tea extract spectrophotometrically. Calibration was done using Gallic acid at a concentration of 10-50 ppm in methanol. The calibration curve was used to obtain the concentration of phenolic compounds present in green tea extract. The extract yield was found to be 0.3 g g(-1) dry green tea leaves. The TPC in the extract was found to be 173.16 mg GAE g(-1) biomass. A 1000 ppm concentration of green tea extract in biodiesel was capable of enhancing the induction period (IP) of biodiesel from 2.88 h to 7.11 h, which met the American (ASTM D67451) and European (EN 14214) standard specification for oxidation stability of biodiesel. Hence, Camellia assamica can be used as a natural antioxidant for enhancing biodiesel stability in place of synthetic antioxidants derived from non-renewable resources.
机译：绿茶（Camellia Assamica）叶提取物作为抗氧化剂添加剂，并研究了对废物烹饪油（WCO）产生的生物柴油氧化稳定性的影响。 Camellia Assamica提取物可用作用于增强生物柴油的氧化稳定性的合成抗氧化剂的环保和无毒的替代品。使用乙醇作为溶剂，在60℃下在10℃下在油浴中进行抗氧化剂的提取。 Folin-Ciocalteu测定法用于测定绿茶提取物的总酚类含量（TPC）分光光度法。校准在甲醇中以10-50ppm的浓度为10-50ppm进行。校准曲线用于获得绿茶提取物中存在的酚类化合物的浓度。发现提取物产量为0.3g g（-1）干绿茶叶。发现提取物中的TPC为173.16mg gae g（-1）生物质。生物柴油中1000ppm浓度的绿茶提取物能够将生物柴油的诱导期（IP）从2.88小时提升，符合美国（ASTM D67451）和欧洲（EN 14214）生物柴油的氧化稳定性标准规范。因此，Camellia Assamica可用作天然抗氧化剂，用于提高生物柴油稳定性代替来自不可再生资源的合成抗氧化剂。

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