The extraction condition, physic-chemistry characterization, and antioxidant activity of pectin from cactus Opuntia dillenii found commonly growing in the Ninh Thuan coast, Vietnam, were studied. The extraction conditions of antioxidant pectin content, such as temperature, time, cactus-to-solv...
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| Sprog: | English |
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| Udgivet: |
Society of Pharmaceutical Scienc
2022
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| Fag: | |
| Online adgang: | http://scholar.dlu.edu.vn/handle/123456789/990 |
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| Thư viện lưu trữ: | Thư viện Trường Đại học Đà Lạt |
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| Summary: | The extraction condition, physic-chemistry characterization, and
antioxidant activity of pectin from cactus Opuntia dillenii found commonly growing
in the Ninh Thuan coast, Vietnam, were studied. The extraction conditions of
antioxidant pectin content, such as temperature, time, cactus-to-solvent ratio, solvent
pH, and extraction numbers, were surveyed. A correlation between pectin content
and antioxidant activities, physic-chemistry characterization such as FTIR spectra,
sugar composition, viscosity, solubility ability, and esterification degree of
antioxidant pectin were also analyzed. The results showed that the extraction
condition strongly affected (p < 0.05) and close correlation (R2 > 0.9) on pectin
content and antioxidant activities. The pectin content and the antioxidant activities
got the highest value at the condition (pH 4, the solvent/material of 6/1 (v/w), the
extracting time of 90 min, and extracting temperature of 90 ºC). Glucuronic and
galacturonic acid of antioxidant pectin occurred from 20.920 min to 21.765 min and
20.915 min to 21.779 min, respectively. Pectin possessed an esterification degree of
62.38 ± 0.94 %, viscosity of 0.893 ± 0.051 Pa.s, and fully solubility in 90 ºC. They
fully dispersed into hot water and formed gelation in cold water. Antioxidant pectin
of cactus Opuntia dillenii grown in the Ninh Thuan coast is useful for application
into the foods industry. |
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