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Acta Physiologiae Plantarum

, 42:14 | Cite as

Qualities and antioxidant activities of lotus leaf affected by different drying methods

  • Chunyan Guo
  • Nan Zhang
  • Cunqi Liu
  • Jingjing Xue
  • Jianzhou ChuEmail author
  • Xiaoqin YaoEmail author
Original Article
  • 26 Downloads

Abstract

Drying treatments are an effective method for preserving original beneficial ingredients of postharvest plants. This work supplied the suitable drying conditions of three drying methods by investigating the changes of lotus leaves’ quality and antioxidant activity. The results indicated that: (1) Oven drying (55–65 °C) was the most appropriate way to keep the higher contents of alkaloids and amino acids, and the higher activities in DPPH radical scavenging and hydroxyl radical scavenging in lotus leaf treated with three drying methods; (2) Steam kill-enzyme torrefaction (3–5 min) was the most appropriate method for keeping the higher contents of flavone and the higher activities of superoxide radical scavenging in lotus leaf treated with three drying methods; (3) Microwave drying (680–850 W) was the most appropriate means to keep the higher contents of vitamin C, soluble sugar and protein in lotus leaf treated with three drying methods; (4) The color of lotus leaf treated with microwave treatments was more bright green than that treated with the other two methods; Therefore, the actual conditions of each drying means have to be taken into consideration when use the drying means.

Keywords

Lotus leaf Drying methods Alkaloid Radical scavenging activity 

Notes

Funding

This work has been supported by the National Natural Science Foundation of China (No. 31300321), Natural Science Foundation of Hebei Province (No. C2012201080), and Open Foundation of Hebei Key Laboratory of Wetland Ecology and Conservation (No. hklk201904).

Compliance with ethical standards

Conflict of interest

Chun-Yan Guo declares that she has no conflict of interest. Nan Zhang declares that she has no conflict of interest. Cun-Qi Liu declares that he has no conflict of interest. Jing-Jing Xue declares that she has no conflict of interest. Jian-Zhou Chu declares that he has no conflict of interest. Xiao-Qin Yao declares that she has no conflict of interest.

Ethical approval

This article does not contain any studies involving human participants or animals performed by any of the authors.

Informed consent

Not applicable as this study does not include any human participants.

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Copyright information

© Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Kraków 2020

Authors and Affiliations

  1. 1.The College of Life SciencesHebei UniversityBaodingChina

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