Attribute-Specific Quality Responses of 'Gangchan-kul' Korean Melon to Sequential Postharvest Treatments During Storage at 20 °C

초록

Highlights What are the main findings? What are the implications of the main findings?Highlights What are the main findings? What are the implications of the main findings?Abstract We examined whether adding a second immersion after hot water was accompanied by consistent quality responses during storage of "Gangchan-kul" Korean melon. Five sequences were compared in one commercial harvest lot: untreated Control; hot water (HW; 45 degrees C, 5 min); HW followed by peracetic acid (PAA; 80 mg L-1, 1 min); or HW followed by pileus-type or antler-type Ganoderma extract (PGE or AGE; 250 mg L-1, 2 min). Fruits were stored unwrapped at 20 degrees C for 15 d. Date-specific profiles were compared with time-weighted means; browning index (BI) and firmness remained descriptive because biological variance was unavailable. HW+PAA had the lowest day 15 BI without sustained separation during storage. HW+PGE had the lowest time-weighted weight loss (3.12%) and firmness (14.52 N), but its weight-loss mean exceeded HW on day 15. HW+AGE exceeded HW in soluble solids content by 0.90 degrees Brix (unadjusted 95% CI, 0.32-1.49; Holm p = 0.013 within the endpoint and 0.052 across 16 contrasts). No weight-loss or gas-exchange contrast met the primary Holm criterion. Period-average and final-day results therefore gave different assessments, without establishing a consistently superior sequence. These exploratory findings describe complete handling sequences within the tested lot.

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