Chestnut kernel is a woody grain with high nutritional value and utilized value, but it is susceptible to Browning. Previous studies have shown that phenol is the substrate of enzymes that lead to browning. In order to investigate the substrates that that leads to browning of peroxidase (POD) and polyphenol oxidase (PPO) of chestnut kernel. The extraction and purification methods and the main substrates of POD and PPO from chestnut kernel were investigated. First, the effects on enzyme activity of different kinds of buffer, temperature, time and pH value were studied; second, the salting out purification of different concentrations and the main substrates of POD and PPO from chestnut were studied. The results were shown that POD enzyme in chestnut could be obtained by extracting with sodium dihydrogen phosphate-dibasic sodium phosphate buffer (pH 6.8) at 4°C for 5 h. PPO enzyme in chestnut could be obtained by extracting with disodium hydrogen phosphate-citric acid buffer (pH 5.4) at 4°C for 5 h. The two enzymes could be purified best by 80% ammonium sulfate, and the activity of POD and PPO enzyme had been enhanced for 60% and 190% respectively. Gallic acid might be the main substrate of POD and PPO in browning of chestnut kernel.
Published in | American Journal of Bioscience and Bioengineering (Volume 7, Issue 2) |
DOI | 10.11648/j.bio.20190702.13 |
Page(s) | 40-45 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2019. Published by Science Publishing Group |
Chestnut Kernel, Enzymatic Browning, Extraction, Purification, Substrate
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APA Style
Gao Xiang, Han Mengmeng, Cai Ziyi, Zhang Xingyuan, Wang Fang, et al. (2019). Study on the Effects of Extraction and Purification Conditions on the Activity of Peroxidase and Polyphenol Oxidase from Chestnut Kernel and on Their Substrates. American Journal of Bioscience and Bioengineering, 7(2), 40-45. https://doi.org/10.11648/j.bio.20190702.13
ACS Style
Gao Xiang; Han Mengmeng; Cai Ziyi; Zhang Xingyuan; Wang Fang, et al. Study on the Effects of Extraction and Purification Conditions on the Activity of Peroxidase and Polyphenol Oxidase from Chestnut Kernel and on Their Substrates. Am. J. BioSci. Bioeng. 2019, 7(2), 40-45. doi: 10.11648/j.bio.20190702.13
AMA Style
Gao Xiang, Han Mengmeng, Cai Ziyi, Zhang Xingyuan, Wang Fang, et al. Study on the Effects of Extraction and Purification Conditions on the Activity of Peroxidase and Polyphenol Oxidase from Chestnut Kernel and on Their Substrates. Am J BioSci Bioeng. 2019;7(2):40-45. doi: 10.11648/j.bio.20190702.13
@article{10.11648/j.bio.20190702.13, author = {Gao Xiang and Han Mengmeng and Cai Ziyi and Zhang Xingyuan and Wang Fang and Pang Meixia and Qi Jinghua}, title = {Study on the Effects of Extraction and Purification Conditions on the Activity of Peroxidase and Polyphenol Oxidase from Chestnut Kernel and on Their Substrates}, journal = {American Journal of Bioscience and Bioengineering}, volume = {7}, number = {2}, pages = {40-45}, doi = {10.11648/j.bio.20190702.13}, url = {https://doi.org/10.11648/j.bio.20190702.13}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.bio.20190702.13}, abstract = {Chestnut kernel is a woody grain with high nutritional value and utilized value, but it is susceptible to Browning. Previous studies have shown that phenol is the substrate of enzymes that lead to browning. In order to investigate the substrates that that leads to browning of peroxidase (POD) and polyphenol oxidase (PPO) of chestnut kernel. The extraction and purification methods and the main substrates of POD and PPO from chestnut kernel were investigated. First, the effects on enzyme activity of different kinds of buffer, temperature, time and pH value were studied; second, the salting out purification of different concentrations and the main substrates of POD and PPO from chestnut were studied. The results were shown that POD enzyme in chestnut could be obtained by extracting with sodium dihydrogen phosphate-dibasic sodium phosphate buffer (pH 6.8) at 4°C for 5 h. PPO enzyme in chestnut could be obtained by extracting with disodium hydrogen phosphate-citric acid buffer (pH 5.4) at 4°C for 5 h. The two enzymes could be purified best by 80% ammonium sulfate, and the activity of POD and PPO enzyme had been enhanced for 60% and 190% respectively. Gallic acid might be the main substrate of POD and PPO in browning of chestnut kernel.}, year = {2019} }
TY - JOUR T1 - Study on the Effects of Extraction and Purification Conditions on the Activity of Peroxidase and Polyphenol Oxidase from Chestnut Kernel and on Their Substrates AU - Gao Xiang AU - Han Mengmeng AU - Cai Ziyi AU - Zhang Xingyuan AU - Wang Fang AU - Pang Meixia AU - Qi Jinghua Y1 - 2019/06/15 PY - 2019 N1 - https://doi.org/10.11648/j.bio.20190702.13 DO - 10.11648/j.bio.20190702.13 T2 - American Journal of Bioscience and Bioengineering JF - American Journal of Bioscience and Bioengineering JO - American Journal of Bioscience and Bioengineering SP - 40 EP - 45 PB - Science Publishing Group SN - 2328-5893 UR - https://doi.org/10.11648/j.bio.20190702.13 AB - Chestnut kernel is a woody grain with high nutritional value and utilized value, but it is susceptible to Browning. Previous studies have shown that phenol is the substrate of enzymes that lead to browning. In order to investigate the substrates that that leads to browning of peroxidase (POD) and polyphenol oxidase (PPO) of chestnut kernel. The extraction and purification methods and the main substrates of POD and PPO from chestnut kernel were investigated. First, the effects on enzyme activity of different kinds of buffer, temperature, time and pH value were studied; second, the salting out purification of different concentrations and the main substrates of POD and PPO from chestnut were studied. The results were shown that POD enzyme in chestnut could be obtained by extracting with sodium dihydrogen phosphate-dibasic sodium phosphate buffer (pH 6.8) at 4°C for 5 h. PPO enzyme in chestnut could be obtained by extracting with disodium hydrogen phosphate-citric acid buffer (pH 5.4) at 4°C for 5 h. The two enzymes could be purified best by 80% ammonium sulfate, and the activity of POD and PPO enzyme had been enhanced for 60% and 190% respectively. Gallic acid might be the main substrate of POD and PPO in browning of chestnut kernel. VL - 7 IS - 2 ER -