บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of fruit handling and fruit coatings on blackheart (internal brown spot) and other aspects of fresh pineapple quality.

Swete Kelly, D. E.; Bagshaw, J.;

Acta Horticulturae Year: 1993 Issue: No. 334 Pages: 305-316 Ref: 10 ref.

1993

บทคัดย่อ

Effect of fruit handling and fruit coatings on blackheart (internal brown spot) and other aspects of fresh pineapple quality.

From 1987 to 1991 a programme to improve fresh fruit pineapple quality was conducted in Queensland. Fruit outturn studies at major Australian markets identified quality issues. Primary among these were winter black heart incidence, fruit abrasion and water blister (caused by Thielaviopsis paradoxa [Ceratocystis paradoxa]). An extension and marketing skills programme was run to improve fruit quality. Concurrently research was carried out on the effects of handling systems on black heart development and fruit quality. Several trials were also run to assess the ability of fruit coatings (Semperfresh [sucrose esters] or Pineapple Lustre (FMC)) to reduce the incidence of black heart symptoms during winter. Field chilling was clearly identified as the major contributor to black heart symptoms seen at consumption. The effect of chilling during handling did not significantly increase symptoms within 2 weeks of harvest. Fruit coatings were found to alleviate, but not eliminate, winter black heart symptoms. During the summer months fruit coatings eliminated any symptoms of black heart induced by cool storage shipment. Given the cost of treatment, fruit coatings are not considered to be useful for winter fruits as black heart prevention cannot be guaranteed.