Exogenous Melatonin Delays the Aging of Gastrodia After Harvest and Maintains Its Quality

Gastrodia elata is not only a traditional Chinese medicine but also a food raw material. Gastrodia is very perishable, and its effective constituents decrease significantly. N‐Acetyl‐5‐methoxytryptamine (melatonin) is widely used in the preservation of various fruits and vegetables after harvest. In this study, the optimal melatonin treatment concentration and duration (0.2 mM MT immersed for 3 min) were determined to effectively delay the weight loss rate, decay rate, and disease severity index of Gastrodia. Immersion of Gastrodia tubers with 0.2 mM MT for 3 min could delay the degradation of gastrodin (GAS), 4‐hydroxybenzyl alcohol (4‐HBA), balisside A (PA), balisside B (PB), balisside C (PC), and Gastrodia polysaccharide (GEF) during storage. This method can inhibit hydrogen peroxide (H2O2), superoxide anion (O2•-), and malondialdehyde (MDA); improve the radical clearance of (O2•-, OH•, and DPPH) during storage; and enhance the activities of key enzymes in the ascorbic acid–glutathione (AsA‐GSH) cycle, leading to improved regeneration of ascorbic acid (AsA) and glutathione (GSH). Melatonin treatment also increased the activities of antioxidant enzymes, such as catalase (CAT) and superoxide dismutase (SOD); decreased the activity of peroxidase (POD); and enhanced the scavenging ability of reactive oxygen species (ROS). In addition, exogenous melatonin treatment increased endogenous melatonin content, thereby regulating the aging process of Gastrodia.

• Publication year

  2025

• Venue

  Journal of food processing and preservation

• Publication date

  2025-01-01

• Fields of study

  Not labeled

• Identifiers
  DOI 10.1155/jfpp/1914835
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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