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. 2023 Jan 5;9:1087453. doi: 10.3389/fnut.2022.1087453

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Copyright © 2023 Guan, Chen, Guo, Cui, Xu, Wan, Zhou, Wang and Yang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Residual sulfur dioxide content after processing of Gastrodia elata (A), Effect of steaming and sulfur fumigation on the pH of G. elata powder (B). NSt-NSf, nonsteam and nonsulfur fumigation treatment; NSt-Sf, nonsteam and sulfur fumigation treatment; St-NSf, steam and nonsulfur fumigation treatment; St-Sf, steam and sulfur fumigation treatment.