@article{ma_hao_chen_zhao_chen_sun_xu_2017,  title={Production, Purification and Physicochemical Properties of an Exo-Polygalacturonase from Aspergillus niger SW06},  volume={28},  ISSN={0103-5053},  url={https://doi.org/10.21577/0103-5053.20160210},  DOI={10.21577/0103-5053.20160210},  number={4},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Ma, Yu-ping and Hao, Hui and Chen, Zhi-fei and Zhao, Zhi-wei and Chen, Shun-hui and Sun, Si-wen and Xu, Chun-ping},  year={2017},  month={Apr},  pages={622–628} }