บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Relationships between mineral content, lipoxygenase activity, levels of 1-aminocyclopropane-1-carboxylic acid and ethylene emission in apple fruit flesh disks (cv. Jonagold) during storage.

Marcelle, R. D.;

Postharvest Biology and Technology Year: 1991 Vol: 1 Issue: 2 Pages: 101-109 Ref: 24 ref.

1991

บทคัดย่อ

Relationships between mineral content, lipoxygenase activity, levels of 1-aminocyclopropane-1-carboxylic acid and ethylene emission in apple fruit flesh disks (cv. Jonagold) during storage.

Lipoxygenase activity (LOX), levels of 1-aminocyclopropane-1-carboxylic acid (ACC) and of 1-(malonylamino)cyclopropane-1-carboxylic acid (MACC) and the capacity of isolated fruit discs to produce ethylene were examined during storage of fruits with different mineral content. The internal ethylene concentration (IEC) of the whole fruits was measured before removing discs of tissue. The results show that all these activities depend on the fruit mineral content and are in conformity with known relations between minerals and fruit storage. For instance, fruits rich in calcium and/or phosphorus presented a lower LOX activity, a lower ACC content and a lower ethylene emission while fruits rich in potassium and/or magnesium and with a relatively high potassium:calcium ratio presented a higher LOX activity, a higher ACC level and a higher ethylene emission. The results are discussed in an attempt to explain the effects of minerals on storage quality.