Effects of modified atmosphere packaging on physicochemical properties of fresh-cut ‘Deveci’ pears

This study aimed at determining the respiration rate of fresh-cut ‘Deveci’ pears and studying the effects of modified atmosphere packaging (MAP) on its quality. Respiration rate decreased with decreasing O₂ level and it was determined as 1.04 ml O₂/kg/hr or 1.16 ml CO₂/kg/hr, under 4% O₂+5% CO₂ gaseous environment at 4°C. Michaelis-Menten with no inhibition was the best model to fit the respiration data. MAP under 2.15% O₂+8.70% CO₂ equilibrium atmosphere resulted in a lower total color change, a*-value, chroma, and a higher hue angle and L*-value compared to the air-control during 8-day storage at 4°C. The firmness of pear slices was better maintained in the MAP. The MAP treatment was successful in controlling the total soluble solids, pH, and titratable acidity of the fresh-cut pears. As a result, MAP of fresh-cut ‘Deveci’ pears has an important potential to preserve the physicochemical properties of the product. Novelty impact statement: Respiration rate of fresh-cut ‘Deveci’ pears was reduced by 3–4-fold to 1.04 ml O₂/kg/hr or 1.16 ml CO₂/kg/hr values by modified atmosphere of 4% O₂ and 5% CO₂ at 4°C. Michaelis-Menten model with no CO₂ inhibition was the best model for respiration rate as a function of O₂ and CO₂ concentrations. Modified atmosphere packaging improved texture and color, and maintained acidity and total soluble solids of fresh-cut ‘Deveci’ pears during storage.