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Optimization of extraction conditions and evaluation of Manilkara zapota (L.) P. Royen fruit peel extract for in vitro α-glucosidase enzyme inhibition and free radical scavenging potential
Future Journal of Pharmaceutical Sciences ( IF 3.4 ) Pub Date : 2021-07-26 , DOI: 10.1186/s43094-021-00305-4
Pravin P. Karle 1 , Shashikant C. Dhawale 1 , Vijay V. Navghare 1 , Shivraj S. Shivpuje 1
Affiliation  

Most of the edible portions like peel and skin of some fruits is discarded while consuming it, though they are rich in several health beneficial phytochemicals or nutrients. Many reports from literature are about fruit pulp of (Sapota) Manilkara zapota (L) P. Royen having high radical scavenging and antioxidant potential, but the studies relating to peel extracts are scanty. Regardless of its commendable phytoconstituents which could have free radical scavenging potential, this fruit peel is as yet still needed to be assessed for in vitro antidiabetic prospects. Hence, the present study aims at evaluating in vitro free radical scavenging and α-glucosidase enzyme hindrance abilities of this fruit peel. With a maximum considerable % extractive yield (18.90%) in 70% ethanol, this study has demonstrated that 70% ethanolic extract of Manilkara Zapota (L.) P. Royen Fruit Peel (MZFP) has the highest in vitro free radical scavenging potential as compared to extracts of other solvents viz. n-hexane, chloroform, acetone, absolute ethanol, and water by DPPH and H2O2 assays. In order to optimize the extraction condition parameters, MZFP sample evaluated with three different concentrations of ethanol (40%, 70%, 100%), extraction times (6 h, 9 h, 12 h), and temperatures (40 °C, 50 °C, 60 °C) to get the highest radical scavenging potential. The MZFP when extracted with 70% ethanol, at 50 °C for 12 h, showed higher DPPH (IC50 = 0.34 and 88.42% inhibition at 1 mg/ml) and H2O2 (IC50 = 32.69 and 65.78% inhibition at 50 μg/ml) radical scavenging potential than absolute and 40% ethanolic extracts, when ascorbic acid was used as a reference standard. While further evaluation for in vitro α-glucosidase enzyme inhibition, 70% ethanolic MZFP extract demonstrated high inhibition activity (IC50 = 104.23 ± 1.75 μg/ml) than absolute ethanolic extract (IC50 = 111.65 ± 1.57 μg/ml) with a significant difference (p < 0.05), when acarbose was taken as reference inhibitor (IC50 = 86.93 ± 0.74 μg/ml). Overall results indicated that MZFP 70% ethanolic extract exhibited promising in vitro radical scavenging and α-glucosidase enzyme inhibition potential. Thus, suggesting further studies with isolated phytochemicals from peel to explore its potentials for antidiabetic activity through in vitro α-glucosidase enzyme inhibition.

中文翻译:

Manilkara zapota (L.) P. Royen果皮提取物的提取条件优化及评价体外α-葡萄糖苷酶抑制和自由基清除能力

大多数可食用部分,如某些水果的皮和皮,在食用时会被丢弃,尽管它们富含多种有益健康的植物化学物质或营养素。许多文献报道是关于 (Sapota) Manilkara zapota (L) P. Royen 的果肉具有高自由基清除和抗氧化潜力,但有关果皮提取物的研究很少。尽管其值得称道的植物成分可能具有清除自由基的潜力,但仍需要评估这种果皮的体外抗糖尿病前景。因此,本研究旨在评估这种果皮的体外自由基清除能力和α-葡萄糖苷酶阻碍能力。在 70% 乙醇中具有最大可观的 % 提取率 (18.90%),该研究表明,与其他溶剂的提取物相比,Manilkara Zapota (L.) P. Royen 果皮 (MZFP) 的 70% 乙醇提取物具有最高的体外自由基清除能力。正己烷、氯仿、丙酮、无水乙醇和水通过 DPPH 和 H2O2 测定。为了优化提取条件参数,MZFP 样品用三种不同浓度的乙醇(40%、70%、100%)、提取时间(6 小时、9 小时、12 小时)和温度(40 °C、50 °C, 60 °C) 以获得最高的自由基清除能力。MZFP 当用 70% 乙醇在 50 °C 下提取 12 小时时,显示出更高的 DPPH(IC50 = 0.34 和 88.42% 抑制在 1 mg/ml)和 H2O2(IC50 = 32.69 和 65.78% 抑制在 50 μg/ml)比绝对和 40% 乙醇提取物的自由基清除能力,当抗坏血酸用作参考标准时。在进一步评估体外 α-葡萄糖苷酶抑制作用的同时,70% 乙醇 MZFP 提取物表现出比无水乙醇提取物(IC50 = 111.65 ± 1.57 μg/ml)高的抑制活性(IC50 = 104.23 ± 1.75 μg/ml),具有显着差异( p < 0.05),当阿卡波糖被用作参考抑制剂时 (IC50 = 86.93 ± 0.74 μg/ml)。总体结果表明,MZFP 70% 乙醇提取物表现出有希望的体外自由基清除和 α-葡萄糖苷酶抑制潜力。因此,建议对从果皮中分离的植物化学物质进行进一步研究,以探索其通过体外 α-葡萄糖苷酶抑制作用具有抗糖尿病活性的潜力。当阿卡波糖作为参考抑制剂时,70% 乙醇 MZFP 提取物表现出比无水乙醇提取物(IC50 = 111.65 ± 1.57 μg/ml)高的抑制活性(IC50 = 104.23 ± 1.75 μg/ml),具有显着差异(p < 0.05) (IC50 = 86.93 ± 0.74 μg/ml)。总体结果表明,MZFP 70% 乙醇提取物表现出有希望的体外自由基清除和 α-葡萄糖苷酶抑制潜力。因此,建议对从果皮中分离的植物化学物质进行进一步研究,以探索其通过体外 α-葡萄糖苷酶抑制作用具有抗糖尿病活性的潜力。当阿卡波糖作为参考抑制剂时,70% 乙醇 MZFP 提取物表现出比无水乙醇提取物(IC50 = 111.65 ± 1.57 μg/ml)高的抑制活性(IC50 = 104.23 ± 1.75 μg/ml),具有显着差异(p < 0.05) (IC50 = 86.93 ± 0.74 μg/ml)。总体结果表明,MZFP 70% 乙醇提取物表现出有希望的体外自由基清除和 α-葡萄糖苷酶抑制潜力。因此,建议对从果皮中分离的植物化学物质进行进一步研究,以探索其通过体外 α-葡萄糖苷酶抑制作用具有抗糖尿病活性的潜力。总体结果表明,MZFP 70% 乙醇提取物表现出有希望的体外自由基清除和 α-葡萄糖苷酶抑制潜力。因此,建议对从果皮中分离的植物化学物质进行进一步研究,以探索其通过体外 α-葡萄糖苷酶抑制作用具有抗糖尿病活性的潜力。总体结果表明,MZFP 70% 乙醇提取物表现出有希望的体外自由基清除和 α-葡萄糖苷酶抑制潜力。因此,建议对从果皮中分离的植物化学物质进行进一步研究,以探索其通过体外 α-葡萄糖苷酶抑制作用具有抗糖尿病活性的潜力。
更新日期:2021-07-26
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