บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of ripening on the parameters of three stress relaxation models for banana and plantain.

Kajuna, S.T.A.R., Bilanski, W.K. and Mittal, G.S.

Applied Engineering in Agriculture. Volume 14, Number 1, Jan 1998. Pages 55-61.

1998

บทคัดย่อ

Effect of ripening on the parameters of three stress relaxation models for banana and plantain.

Ethylene-treated and non-treated bananas (Musa AAA group) and plantains (Musa AAB group) were stored at various temperatures ranging from 13 degrees C to 25 degrees C and 90% relative humidity for eight days. Cylindrical samples, that were obtained from the fruits removed from the storage on daily basis, were subjected to a ramp-step compression. The stress was allowed to relax for eight minutes. Data were fitted to three models: Model 1, generalized Maxwell; Model 2, Nussinovitch; and Model 3, Peleg. Generally, all the models predicted the stress-relaxation behavior of the fruit pulp reasonably well. However, Models 1 and 3 provide better interpretation of the results. Hard banana and plantain exhibited higher relaxation time constants than softer pulp. Ethylene-treated pulp relaxed the stress much faster than non-treated pulp. On the average, bananas had a higher relaxation time constants than plantains.