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Abstract
Preharvest sprays or postharvest dips of CaCl2 decreased the incidence of surface pitting of ‘Van’ cherries (Prunus avium L.) resulting from impact damage. Inclusion of a surfactant and thickener in the dip enhanced Ca uptake by cherries in storage. Ca from postharvest dips penetrated the cherry mesocarp rapidly in storage. Maximum Ca uptake by the cherry mesocarp was attained when the pH of the dipping solution was 7. However, postharvest Ca dips were most effective in preventing surface pitting when their pH was 4.
Abstract
Susceptibility of apples (Malus domestica Borkh. ‘Gala’ and ‘Granny Smith’) to impact damage increased from early to late harvest time and decreased during storage at 1°C. Impact damage was quantified as bruise depth, diameter, volume, or weight. Bruise weight calculated as a percentage of fruit weight was the least variable measurement of bruising that was also proportional to height to impact of the fruit. Although a range of 22 New Zealand-grown apple cultivars differed in susceptibility to bruising, the variation was not correlated with fruit density, fruit firmness, or polyphenol content and polyphenoloxidase (PPO) activity in epidermal and cortical fruit tissues.
Abstract
Preharvest antitranspirant sprays were most effective in decreasing the incidence of surface pitting in ‘Van’ sweet cherries (Prunus avium L.) when applied immediately prior to harvest. Antitranspirant or wax coatings applied to ‘Van’ cherries as a postharvest dip decreased weight loss in storage, the incidence of discolored stems and surface pitting in storage. Antitranspirant concentration in the postharvest dipping solution was negatively correlated to the incidence of surface pitting.
Abstract
A delay in storage at 0°C prior to impact damage decreased the incidence of surface disorders due to mechanical damage in ‘Van’ cherries (Prunus avium L.). A 4% CaCl2 plus 0.25% Keltrol postharvest dip reduced the incidence of pitting and surface marking at all delay periods after dipping.
Abstract
The resistance of sweet cherries to compression damage as measured by the fruit firmness variables, [force to bioyield (FBY), slope of a compression curve, and maximum and residual forces of a compression-relaxation curve] decreased linearly with increasing fruit temperture. The incidence of impact-induced surface pitting decreased linearly as fruit temperature increased. The rate of decrease in impact damage per degree increase in fruit temperature was a function of the cultivar, contact surface, and drop height.
Abstract
‘Bing’ cherries from lightly (LC) and heavily (HC) cropped trees were harvested at weekly intervals, subjected to impact damage (bruising), and stored at 4°C for up to 28 days in 1982 and 12 days in 1983. On a given harvest date, cherries from LC trees were firmer (higher bioyield) and riper, as indicated by higher soluble solids and total anthocyanin concentrations (TAcy) than those from HC trees. At a given color (TAcy) within the range of commercial shipping maturity, cherries from HC trees were more susceptible to bruising, were softer, and had lower concentrations of soluble solids, acid, and dry matter than cherries from LC trees.
.1016/0021-9673(92)85196-Z Spackman, V.M.T. Cobb, A.H. 2002 An enzyme-based method for the rapid determination of sucrose, glucose and fructose in sugar beet roots and the effects of impact damage and postharvest storage in clamps J. Sci. Food Agr. 82 80 86 10.1002/jsfa.1005