Temperature-related changes in respiration and Q10 coefficient of Guava
Open Access
- 1 October 2005
- journal article
- Published by FapUNIFESP (SciELO) in Scientia Agricola
- Vol. 62 (5), 458-463
- https://doi.org/10.1590/s0103-90162005000500008
Abstract
Guava (Psidium guajava L.) is a tropical fruit that presents fast post-harvest ripening; therefore it is a very perishable product. Inappropriate storage temperature and retail practices can accelerate fruit quality loss. The objective of this study was to evaluate the respiratory activity (RA), the ethylene production (EP) and Q10 of guava fruit at different storage temperatures. 'Paluma' guava fruits were harvested at maturity stage 1 (dark-green skin) and stored at either 1, 11, 21, 31 or 41ºC; RA and EP were determined after 12, 36, 84 and 156 h of storage. RA and EP rates at 1 and 11ºC were the lowest - 0.16 and 0.43 mmol CO2 kg-1 h-1 and 0.003 and 0.019 µmol C2H4 kg-1 h-1, respectively. When guavas were stored at 21ºC, a gradual increase occurred in RA and EP, reaching 2.24 mmol CO2 kg-1 h-1 and 0.20 µmol C2H4 kg-1 h-1, after 156 h of storage. The highest RA and EP were recorded for guavas stored at 31ºC. In spite of high RA, guavas stored at 41ºC presented EP similar to guavas stored at 11ºC, an indicator of heat-stress injury. Considering the 1-11ºC range, the mean Q10 value was around 3.0; the Q10 value almost duplicated at 11-21ºC range (5.9). At 21-31ºC and 31-41ºC, Q10 was 1.5 and 0.8, respectively. Knowing Q10, respiratory variation and ripening behavior in response to different temperatures, fruit storage and retail conditions can be optimized to reduce quality losses.Keywords
This publication has 14 references indexed in Scilit:
- Índices para avaliar qualidade pós-colheita de goiabas em diferentes estádios de maturaçãoPesquisa Agropecuária Brasileira, 2004
- Heat treatment and fruit ripeningPostharvest Biology and Technology, 2000
- Effect of high temperature stress on ethylene biosynthesis, respiration and ripening of ‘Hayward’ kiwifruitPostharvest Biology and Technology, 2000
- Respiratory parameters of onion bulbs (Allium cepa) during storage. Effects of ionising radiation and temperatureJournal of the Science of Food and Agriculture, 2000
- Effect of storage temperature on ripening and quality of custard apple (Annona squamosaL.) fruitsThe Journal of Horticultural Science and Biotechnology, 2000
- EFFECTS OF DIFFERENT POSTHARVEST TREATMENTS ON THE RESPIRATION PATTERNS OF GUAVA (PSIDIUM GUAJAVA L.)Acta Horticulturae, 1998
- Effect of high temperature on ethylene biosynthesis by tomato fruitPostharvest Biology and Technology, 1992
- Heat treatment of ripening apples: Differential effects on physiology and biochemistryPhysiologia Plantarum, 1990
- Some Characteristics of the System Converting 1-Aminocyclopropane-1-carboxylic Acid to EthylenePlant Physiology, 1981
- Inhibition of Ethylene Production by 2,4-Dinitrophenol and High TemperaturePlant Physiology, 1980