Identification of causative compounds and mechanism for off-flavor generation during storage of satsuma mandarin fruit

• Project/Area Number: 24780035
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Horticulture/Landscape architecture
• Research Institution: National Agriculture and Food Research Organization
• Principal Investigator: MATSUMOTO Hikaru 独立行政法人農業・食品産業技術総合研究機構, 果樹研究所 カンキツ研究領域, 主任研究員 (20355407)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: ウンシュウミカン / 異味異臭 / 収穫後温度 / オルニチン / カンキツ / ウンシュミカン / 貯蔵 / 果実品質 / アミノ酸代謝 / アミノ酸 / オルニチン代謝 / 代謝

Outline of Final Research Achievements

To identify causative compounds and mechanism for off-flavor generation during storage of satsuma mandarin fruit, we investigated postharvest factor affecting off-flavor generation. Postharvest temperature was one of the factors which causes the off-flavor generation. In the fruit stored at 10℃, off-flavor did not generated, but in the fruit stored at 5℃, off-flavor generated with ornithine accumulation. However, our result suggest that ornithine is not a causative compound for off-flavor, but metabolic changes leading to ornithine accumulation would contribute to the off-flavor generation. Our results also suggest that storage at the temperature, in which ornithine do not accumulate, would be effective to suppress off-flavor generation during storage of satsuma mandarin fruit.

Research Products

• [Journal Article] Effect of different postharvest temperatures on the accumulation of sugars, organic acids, and amino acids in the juice sacs of Satsuma mandarin (Citrus unshiu Marc.) fruit (2012)
  • Author(s): Hikaru Matsumoto, Yoshinori Ikoma
  • Journal Title: Journal of Agricultural and Food Chemistry Volume: 60 Issue: 39 Pages: 9900-9909
  • DOI: 10.1021/jf303532s
  • Peer Reviewed
• [Presentation] 収穫後温度がカンキツ果実中の糖・有機酸・アミノ酸集積に及ぼす影響と品種間差 (2013)
  • Author(s): 松本 光、生駒吉識
  • Organizer: 園芸学会 平成25年度秋季大会
  • Place of Presentation: 岩手大学上田キャンパス
• [Presentation] Effect of postharvest temperature on accumulation of primary metabolites in juice sacs of Satsuma mandarin (Citrus unshiu) fruit (2012)
  • Author(s): Hikaru Matsumoto, Yoshinori Ikoma
  • Organizer: 2012 International Citrus Congress
  • Place of Presentation: Valencia (Spain)
• [Book] 植調 (2014)
  • Author(s): 松本 光
  • Total Pages: 6
  • Publisher: 日本植物調節剤研究協会
• [Book] 果実日本 (2014)
  • Author(s): 松本 光
  • Total Pages: 4
  • Publisher: 日本園芸農業協同組合連合会