Postharvest quality assessment of apple during storage at ambient temperature

Abstract

In this study, the physical and chemical quality attributes of apples were measured experimentally during the storage after harvesting, using well-defined procedures and techniques. Overall quality index (OQi) models were formulated in terms of measured quality attributes. Firmness (F) and total soluble solids (TSS) varied from 11.88 AE 0.25 to 7.68 AE 0.24 N and 14.1 AE 0.1 to 12.7 AE 0.1 % Brix, respectively, whereas acidity and density varied from 0.163 AE 0.003 to 0.081 AE 0.001 % and 0.995 AE 0.003 to 0.951 AE 0.004 gm/cm 3 , respectively. The gloss values at 45 and 60 angles of incidence were found to be in the range of 7.9 AE 0.2 to 4.1 AE 0.3 and 6.8 AE 0.1 to 2.5 AE 0.3, respectively whereas, the Hunter color values L, a, b were found to be in the range of 51.75 AE 1.33 to 57.01 AE 0.98, 24.20 AE 0.86 to 30.12 AE 1.13, and 19.53 AE 1.61 to 22.96 AE 1.12, respectively. Formulated models were validated with the sensory scores. OQi predicted by the Model ML2 was found to be in consonance with the variation in the sensory overall quality scores. The OQi, as per the model ML2, was estimated as the ratio of the product of the constant C (265.5), acidity (A), and firmness (F) to the mod of the product of Hunter color values a and b. Finally, the predicted values of OQi were correlated with the measured quality parameters to check the possibility of predicting OQi non-destructively by using any one of those measured attributes during the storage.

Method for Prolonging the Shelf Life of Apples after Storage

“…The regression equations are presented in Table 2. The same trend for TSS has been reported in the literature, although described with a third-order polynomial [33,34]. The TSS of the stored apples varied significantly (p < 0.05) in relation to temperature and duration of storage.…”

Comparison of fumigation efficacy of methyl bromide alone and phosphine applied either alone or simultaneously or sequentially against Bactrocera correcta in Selenicereus undatus (red pitaya) fruit

“…After diluting the juice 100‐fold, its TA was measured using an acidity meter (GMK‐855; G‐won Hitech). The TSS and TA values of the juice were measured in triplicate and recorded 24 …”

Artificial intelligence‐based prediction of lycopene content in raw tomatoes using physicochemical attributes

“…The change in colour of tomato samples is an indicator of the advancement of the ripening stage with storage duration. The Hunter colour values ( L , a , b ) 28 were measured using Konica Minolta Chroma meter CR‐400 at five randomly selected equatorial region of tomato samples. All the readings were taken five times and average values of readings are reported.…”