Articles
EFFECT OF CONTROLLED ATMOSPHERE STORAGE ON STORAGE LIFE OF ONION AND GARLIC CULTIVARS
Article number
945_7
Pages
63 – 69
Language
English
Abstract
The garlic Ziemiai, pungent onions Hercules (yellow) and Hyred (red), and salad onion Exhibition were tested during two experimental periods.
The experiment in regular atmosphere (RA) was carried out in a refrigerated storage room held at 2±1°C, with a RH ranging from 58 to 75%. In controlled atmosphere (CA) storage, the temperature was set to 2±1°C and the RH in onion storage chambers ranged from 52 to 87%. The CA storage regime for all cultivars was 1% O2 and 5% CO2. The storage loss was monitored monthly starting from January and the experiment was ended when storage loss had reached 30%. In the first year, Hercules had satisfactory quality in RA for 7 months and in CA for 8 months with storage losses of 32.6 and 28.2%, respectively. Hyred was stored in RA for 6 months (storage loss 28.5%) and in CA for 7 months (26.4%). Exhibition was stored in RA for 5 months (storage loss 27.3%) and in CA for 6 months (31.2%). Garlic Ziemiai maintained good quality in CA store for up to 6 months.
In the second year, storage loss of Hercules in RA and CA was 13.4 and 10.1%, and of Hyred 7.6 and 6.0%, respectively.
Spoilage of Exhibition in RA was 25.1% by January (4 months) and 55.6% by March (6 months), whereas in CA it was only 16.9% by March.
Although the breeding company has advised that this cultivar should only be stored for up to 2 months, the current experiment proved that, in a CA regime, it can be successfully stored for 6 months.
Storage loss of garlic Ziemiai was significantly greater in RA than in the CA (41 and 13%, respectively). For all cultivars, bulb dry matter and soluble solids content was higher in controlled atmosphere conditions compared to regular atmosphere storage.
The experiment in regular atmosphere (RA) was carried out in a refrigerated storage room held at 2±1°C, with a RH ranging from 58 to 75%. In controlled atmosphere (CA) storage, the temperature was set to 2±1°C and the RH in onion storage chambers ranged from 52 to 87%. The CA storage regime for all cultivars was 1% O2 and 5% CO2. The storage loss was monitored monthly starting from January and the experiment was ended when storage loss had reached 30%. In the first year, Hercules had satisfactory quality in RA for 7 months and in CA for 8 months with storage losses of 32.6 and 28.2%, respectively. Hyred was stored in RA for 6 months (storage loss 28.5%) and in CA for 7 months (26.4%). Exhibition was stored in RA for 5 months (storage loss 27.3%) and in CA for 6 months (31.2%). Garlic Ziemiai maintained good quality in CA store for up to 6 months.
In the second year, storage loss of Hercules in RA and CA was 13.4 and 10.1%, and of Hyred 7.6 and 6.0%, respectively.
Spoilage of Exhibition in RA was 25.1% by January (4 months) and 55.6% by March (6 months), whereas in CA it was only 16.9% by March.
Although the breeding company has advised that this cultivar should only be stored for up to 2 months, the current experiment proved that, in a CA regime, it can be successfully stored for 6 months.
Storage loss of garlic Ziemiai was significantly greater in RA than in the CA (41 and 13%, respectively). For all cultivars, bulb dry matter and soluble solids content was higher in controlled atmosphere conditions compared to regular atmosphere storage.
Authors
P. Põldma, U. Moor, A. Merivee , T. Tõnutare
Keywords
Allium cepa, Allium sativum, storage loss, soluble solids, dry matter, pungency
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