Influence of low O2 and high CO2 environment on changes in metabolite concentrations in harvested vegetable soybeans

• Published in: Food chemistry Vol. 317; p. 126380
• Main Authors: Makino, Yoshio, Nishizaka, Atsushi, Yoshimura, Masatoshi, Sotome, Itaru, Kawai, Kenji, Akihiro, Takashi
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.07.2020
• Subjects: Cluster analysis; Glycine max (L.) Merrill; Metabolomics; Modified atmosphere packaging; Nutrient; Postharvest storage; Principal component analysis; Vegetable; Cluster analysis; Metabolomics; Glycine max (L.) Merrill; Nutrient; Postharvest storage; Modified atmosphere packaging; Vegetable; Principal component analysis
• ISSN: 0308-8146; 1873-7072
• DOI: 10.1016/j.foodchem.2020.126380

•Vegetable soybeans were stored normoxia and modified atmosphere (low O2/highCO2)•Vegetable soybeans were stored for 10 d at 25 °C.•Modified atmosphere was effective for maintaining external green color and mass.•Alanine was effective as an O2 stress indicator in vegetable soybeans.•Concentrations of two functional ingredients were high under modified atmosphere. Influence of atmosphere and storage period on the physicochemical and biological properties of harvested vegetable soybeans stored for 10 d at 25 °C was investigated. Storing vegetable soybeans under modified atmosphere (low O2 and high CO2), was more effective in maintaining its green color and mass than storing them under normoxia. Principal component 1 (PC1; contribution rate: 25%) was related to the atmospheres, whereas PC2 (contribution rate: 19%) was related to storage period. Cluster analysis showed that some types of sugars decreased, whereas some types of organic and amino acids increased with deterioration. Alanine, an indicator of low O2 stress, was maintained for 3 d under modified atmospheres, whereas alanine significantly decreased under normoxia. The concentrations of inositol and niacinamide (functional ingredients) under the modified atmospheres were significantly higher than those under normoxia. Thus, storage under modified atmospheres was effective in maintaining freshness and increasing the nutritional content of vegetable soybeans.