บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Selection of a surface coating and optimisation of its concentration for use on 'Hass' avocado (Persea americana Mill.) fruit.

Johnston, J. W.; Banks, N. H.;

New Zealand Journal of Crop and Horticultural Science Year: 1998 Vol: 26 Issue: 2 Pages: 143-151 Ref: 33 ref.

1998

บทคัดย่อ

Selection of a surface coating and optimisation of its concentration for use on 'Hass' avocado (Persea americana Mill.) fruit.

Effects of surface coatings on gas exchange characteristics of Hass avocados were used to select a suitable coating and to optimize its concentration for use on avocado fruits at 20 deg C, 60% RH. Of 6 different surface coatings used, 'Avocado wax' provided the greatest level of benefit (reduction in mass loss and enhanced sheen) for a given level of risk (modification of internal oxygen and carbon dioxide partial pressures). At the other extreme, 2% carboxymethylcellulose provided no benefit but substantially increased risk of fermentation. 'Apple clear'-treated fruits had lowest rates of mass loss, but had poor visual quality. Of the 'Avocado wax' concentrations assessed, 11% was the best. Concentrations greater than this provided marginal further gains in the reduction of mass loss, but imposed unacceptable levels of risk of anaerobiosis in fruits. A packhouse trial confirmed this concentration as best, but achieved somewhat lower levels of benefit.