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Titolo:
Respiratory parameters of onion bulbs (Allium cepa) during storage. Effects of ionising radiation and temperature
Autore:
Benkeblia, N; Varoquaux, P; Gouble, B; Selselet-Attou, G;
Indirizzi:
INRA, Stn Technol Prod Vegetaux, F-84914 Avignon 9, France INRA Avignon France 9 n Technol Prod Vegetaux, F-84914 Avignon 9, France Univ Mostaganem, Inst Biol, Mostaganem 27000, Algeria Univ Mostaganem Mostaganem Algeria 27000 Biol, Mostaganem 27000, Algeria
Titolo Testata:
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
fascicolo: 12, volume: 80, anno: 2000,
pagine: 1772 - 1778
SICI:
0022-5142(20000915)80:12<1772:RPOOB(>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
MODIFIED-ATMOSPHERE; CARBON-DIOXIDE; FRUITS; VEGETABLES; BLUEBERRY; OXYGEN; MODEL;
Keywords:
onions; gamma radiation; respiration rate; activation energy; Q(10); respiratory quotient; sprouting;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Benkeblia, N INRA, Stn Technol Prod Vegetaux, Domaine St Paul,Agroparc, F-84914 Avignon9, France INRA Domaine St Paul,Agroparc Avignon France 9 gnon9, France
Citazione:
N. Benkeblia et al., "Respiratory parameters of onion bulbs (Allium cepa) during storage. Effects of ionising radiation and temperature", J SCI FOOD, 80(12), 2000, pp. 1772-1778

Abstract

The O-2 and CO2 respiration rates of untreated and irradiated onion bulbs (Allium cepa) at 0.15 and 0.30 kGy were measured at 4, 10 and 20 degrees C. The O-2 respiration rate increased for 24 h after treatment from 0.19 mmole kg(-1) h(-1) at 20 degrees C for control samples up to 0.26 and 0.39 mmole kg(-1) h(-1) for 0.15 and 0.3 kGy irradiated onions respectively. Respiratory quotient (RQ) increased with temperature. The Q(10) of the respirationof the control samples (1.61) was lower than that of any other plant tissue, but it increased with storage duration and irradiation dose. The respiration rate of control onions increased steadily over 25 weeks of storage at 4 degrees C, while that of the irradiated samples decreased during the sameperiod after a peak observed after irradiation treatment. The apparent K-mfor the Menten-Michaelis equation was determined on a new respirometer andaveraged 1.6 kPa at 10 degrees C and 6.3 kPa at 20 degrees C. However, at this higher temperature (20 degrees C) apparent K-m varied with O-2 partialpressure, proving that the respiration of onion bulbs does not follow a Menten-Michaelis-like process. The Fermentative Index (FI) of onions was measured under anoxic conditions as CO2 production rates in mmole kg(-1) h(-1) at 4, 10 and 20 degrees C. (C) 2000 Society of Chemical Industry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 15:52:16