Physicochemical Properties of Oil Extracts from Gamma Irradiated Almond (prunus Amygdalus L.)
نویسنده
چکیده
Almond nuts were exposed to radiation doses of 1, 2 and 3 kGy of gamma irradiation covering the range for insect/pest disinfestations and for microbial load. Fatty acid composition, acidity value, peroxide value, iodine value specification number, TBA value and color of almond oil extracted from un-irradiated and irradiated sample were determined, immediately after irradiation and after 12 months of storage. Results showed that non-irradiated almond oil was characterized by high amount of unsaturated fatty acids. The fatty acid profile slightly changed due to irradiation. The major change in fatty acid composition was the decrease in the quantity of fatty acids (C16:0, C18:0 and C18:1) and the increase in the quantity of fatty acid (C18:2). Irradiation reduced acidity value, peroxide value, iodine value and specifications value number of almond lipid. Whereas, the TBA value was almost unaffected. Color parameters L*, a* and b* showed a small but statistically significant (p<0.05) increase in all irradiated samples.
منابع مشابه
Adsorption Properties of Low-Cost Biomaterial Derived from Prunus amygdalus L. for Dye Removal from Water
The capability of Prunus amygdalus L. (almond) shell for dye removal from aqueous solutions was investigated and methyl orange was used as a model compound. The effects of operational parameters including pH, ionic strength, adsorbent concentration and mesh size, dye concentration, contact time, and temperature on the removal of dye were evaluated. The adsorption kinetics conformed to the pseud...
متن کاملHypoglycemic effect of Prunus amygdalus seeds in albino rabbits.
On administration of 2.5 g almond seed and its proportionate fractions, viz. 1.22 g defatted seed and 1.28 g oil to three groups of albino rabbits, they showed a definite hypoglycemic action during a two months study. The active factor seems to be a non oil fraction which is only partly soluble in ethyl ether.
متن کاملLiposomal formulations from phospholipids of Greek almond oil. Properties and biological activity.
The seeds of the almond tree [(Prunus dulcis (Mill.) D. A. Webb. (syn. Prunus amygdalus)] were collected in two different periods of maturity and were studied for their lipid content. The total lipids (TL) were extracted by the Bligh-Dyer method and the lipid classes have been isolated by chromatographic techniques and were analyzed by HPTLC coupled with a flame ionization detector (HPTLC/FID) ...
متن کاملPreparation and Characterisation of Chemically Activated Almond Shells by Optimization of Adsorption Parameters for Removal of Chromium VI from Aqueous Solutions
Activated carbon was prepared from agricultural waste “almond (Prunus amygdalus) nut shells” by chemical activation with phosphoric acid as an activating agent at 450 C for 24 hr soaking time. The physical and chemical properties were analyzed. The adsorption of chromium VI from aqueous solution on almond nut shell activated carbon (ASAC) was investigated. The adsorption process parameters pH, ...
متن کامل'Candidatus phytoplasma phoenicium' sp. nov., a novel phytoplasma associated with an emerging lethal disease of almond trees in Lebanon and Iran.
Almonds (Prunus amygdalus) represent an important crop in most Mediterranean countries. A new and devastating disease of almond trees in Lebanon was recently reported, characterized by the development of severe witches'-brooms on which no flowers or fruits developed, and leading to tree death within a few years. A phytoplasma was detected in diseased trees by PCR amplification of rRNA operon se...
متن کامل