บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Postharvest impact bruising of apple as related to the modulus of elasticity.

Yuwana, Y.; Duprat, F.;

International Agrophysics Year: 1996 Vol: 10 Issue: 2 Pages: 131-138 Ref: 21 ref.

1996

บทคัดย่อ

Postharvest impact bruising of apple as related to the modulus of elasticity.

The moduli of elasticity of fruit (E'p and E'7) calculated from the maximum force reading (Fp) and from the average flesh force reading at 7 mm depth (F7) were used to predict the bruise volume of apples during storage. The relationship between the measured bruised volume (MBV) and the predicted bruise volume based on E'p (PBVp) was linear with coefficient of proportionality (Kp) of 4.61 and coefficient of correlation (R) of 0.928 while the relationship between the measured bruise volume (MBV) and the predicted bruise volume based on E'7 (PBV7) was linear with K7 of 2.37 and R of 0.903. Kp linearly correlated to the average of E'p with an R value of 0.974 and K7 linearly correlated to the average of E'7 with an R value of 0.986. The values of E' as well as K markedly decreased during 2 months of storage and were then relatively constant during longer storage periods. Utilizing E'p and Hertz's theory postharvest bruising of Golden Delicious apples was underestimated by 23.37% while with E'7 it wa

s overestimated by 36.66%.