Modelling the effect of temperature on respiration rate of fresh cut papaya (Carica papaya L.) fruits

Abstract

A respiration rate (RR) model based on Peleg's equation was developed for predicting RRs of fresh cut papaya. Respiration data for fresh cut papaya at 3/4 maturity were generated at temperatures 5, 10, 15, 20, 25 and 30°C using a closed system. RRs was found to be significantly influenced by storage temperature and increased from 0.021 to 0.289 mL[O2]/kg·h and 0.063 to 0.393 mL[CO2]/kg·h as a function of O2 and CO2 gas concentrations, respectively. Peleg's constant K 1 and K 2 were obtained from linear regression analysis using GraphPad Prism 5.0 software and regression coefficients have good fit with values close to unity. The model was verified to assess the capability of its predictability of the RRs over the temperatures. There was good agreement with the experimentally estimated RRs. Information derived from the model can contribute in the design of successful modified atmospheric systems for storage of fresh cut papaya.

Effect of Kelulut Honey Nanoparticles Coating on the Changes of Respiration Rate, Ascorbic Acid, and Total Phenolic Content of Papaya (Carica papaya L.) during Cold Storage

“…In this present study, K 2 was more influenced by the coating treatment. A higher value of K 2 was also reported by Rahman et al [ 20 ] for fresh-cut papaya, Bhande et al [ 23 ] for banana, as well as Mahajan and Goswami [ 21 ] for apples. The variance between K 1 and K 2 is attributable to both gaseous and physical changes of fruit during the storage period.…”

“…The figures display the variances between experimental and predicted respiration rates for coated (see Figure 4) and control (see Figure 5) papayas in terms of O 2 , CO 2 , and C 2 H 4 concentrations. Moreover, the empirical equation developed by Peleg [45] has proven its capability for respiration rate prediction in several fresh produce products [20]. Data developed by this equation plays a significant role in the design of successful modified atmospheric systems for nano-coated papaya.…”

“…The Peleg model has been applied to analyse the experimental data on the changing of O 2 , CO 2 , and C 2 H 4 concentrations as well as describe the rate of gas composition function. The suitability of the Peleg model in describing respiration rate has been acknowledged for some fruits, including apples [21,22], bananas [23,24], fresh-cut papaya [20], mangoes [25], and kiwiberry [26]. However, studies on using Peleg modelling to determine the impact of nano-coating on the rate of respiration for the whole papaya are almost non-existent.…”

“…Respiration rate modelling is an effective method to evaluate the respiratory kinetics of fresh produce. There are several respiration rate models that have been used in fruits, such as the Arrhenius, Michaelis–Menten, and Peleg models [ 17 , 20 ]. The Peleg model has been applied to analyse the experimental data on the changing of O 2 , CO 2 , and C 2 H 4 concentrations as well as describe the rate of gas composition function.…”

Rapid mineralisation of the Organic Fraction of Municipal Solid Waste

“…The CDFR at the beginning was 5.2-4.9 mg CO 2 h À1 g À1 IDM, which quickly decreased to a value of 2.05-2.74 mg CO 2 h À1 g À1 IDM at 5 h of the process. It might be explained due to the respiration of fresh vegetable residues (Rahman et al, 2013). Subsequently, CDFR rose rapidly to reach a maximum of 9.72-12.03 mg CO 2 h À1 g À1 IDM at 18 h. Then, CDFR decreased to values close to 6 mg CO 2 h À1 g À1 IDM at 49 h.…”