Study on extraction technology and ultraviolet absorption of sunscreen constituents from aloe

REN Hai-xiang; SHI Fang-chao; QIAO Li-ye; LU Yin; SU Hua

doi:10.3969/j.issn.1006-0111.2013.06.06

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Objective To optimize the extraction technology of aloe. Methods The samples were scanned from 200 to 400 nm by ultraviolet spectrophotometry, then the average ultraviolet absorption was calculated in UVC, UVB and UVA. The quantity of aloin was determined by HPLC. With ultraviolet absorption, aloin content and extraction rate as indexes, the single factor tests and orthogonal experimental design tests L₉(3⁴)were applied to investigate the influence of each factor during ultrasonic extraction. Results The extraction of aloe had strong UV absorption effect in the whole UV range. The optimal conditions for extracting were as follows:50% ethanol concentration, 1:30 solid-liquid ration, 30 min and 30℃ ultrasound extraction. Conclusion The extraction of aloe had good ability of ultraviolet absorption and broad-spectrum sun protection. Ultrasonic wave extraction had high extraction yield and required short time which could be used to extract sunscreen formulation from aloe.

Study on extraction technology and ultraviolet absorption of sunscreen constituents from aloe

Department of Preparation Division Nanjing General Hospital of Nanjing Military Command, PLA, Nanjing 210002, China

Received Date: 2013-08-11

Rev Recd Date: 2013-10-18

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Abstract: Objective To optimize the extraction technology of aloe. Methods The samples were scanned from 200 to 400 nm by ultraviolet spectrophotometry, then the average ultraviolet absorption was calculated in UVC, UVB and UVA. The quantity of aloin was determined by HPLC. With ultraviolet absorption, aloin content and extraction rate as indexes, the single factor tests and orthogonal experimental design tests L₉(3⁴)were applied to investigate the influence of each factor during ultrasonic extraction. Results The extraction of aloe had strong UV absorption effect in the whole UV range. The optimal conditions for extracting were as follows:50% ethanol concentration, 1:30 solid-liquid ration, 30 min and 30℃ ultrasound extraction. Conclusion The extraction of aloe had good ability of ultraviolet absorption and broad-spectrum sun protection. Ultrasonic wave extraction had high extraction yield and required short time which could be used to extract sunscreen formulation from aloe.

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Study on extraction technology and ultraviolet absorption of sunscreen constituents from aloe

doi: 10.3969/j.issn.1006-0111.2013.06.06

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