A panoptic study of antioxidant potential of foliar gel at different harvesting regimens of Aloe vera L.

作者：Ray Anirban^*; Gupta S Dutta

来源：Industrial Crops and Products, 2013, 51: 130-137.

DOI：10.1016/j.indcrop.2013.09.003

• Aloe vera L. gel
• Growth periods
• Antioxidant activity
• Functional group
• Acetylation

Various free radicals (DPPH, super-oxide and hydroxyl) scavenging, transition metal chelating and reducing power assays were conducted to study the antioxidant potential of freeze-dried foliar gel obtained from 2, 3 and 4-year-old Aloe vera L To explore the influence of season, apart from summer, gels from rainy and winter season of 3-year-old aloe were also considered. Gels obtained from different growth periods showed antioxidant potential with varying free radical quenching, transition metal chelating and reducing power activity. The antioxidant activity of aloe gel is changed as a factor of the age of the plants and harvesting seasons, and found to be more pronounced in 3-year-old aloe during summer. Degree of acetylation and functional group distribution studied by H-1 NMR and FTIR spectroscopy respectively, and the distribution of the component polysaccharides and phenolics at different harvesting regimens are found to be critical in the regulation of bioactive potential of aloe gel in terms of pertained antioxidant activity.

• 出版日期2013-11