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Full-Text Articles in Life Sciences

Functional And Bioactive Components From Mackerel (Scomber Scombrus) And Blue Whiting (Micromesistius Poutassou) Processing Waste, Zied Khiari Nov 2010

Functional And Bioactive Components From Mackerel (Scomber Scombrus) And Blue Whiting (Micromesistius Poutassou) Processing Waste, Zied Khiari

Doctoral

The use of fish processing waste from an oily fish model (mackerel, Scomber
scombrus) and a white fish model (blue whiting, Micromesistius poutassou) as a source of functional and bioactive compounds was investigated.
Gelatines were extracted from fish heads and skins using pre-treatment with
different organic acids (acetic, citric, lactic, tartaric and malic acids). Gelatines from fish bones were extracted after pre-treating the bones either chemically or enzymatically. The type of pre-treatment affected the yield, colour, turbidity, amino acid profiles as well as functional properties of fish gelatines. Mackerel gelatines formed stronger and more stable gels than blue whiting. Acetic ...


Metabolic Profiling And Fingerprinting For The Detection And Discrimination Of Mechanical Damage In Mushrooms (Agaricus Bisporus) During Storage, Aoife O'Gorman Oct 2010

Metabolic Profiling And Fingerprinting For The Detection And Discrimination Of Mechanical Damage In Mushrooms (Agaricus Bisporus) During Storage, Aoife O'Gorman

Doctoral

Horticultural products such as mushrooms are exposed to external agents during their postharvest life, which are going to affect product quality. Loss of whiteness during storage is particularly important in the mushroom industry. Rough handling and distribution of crops, fruiting body senescence, bacterial and viral infection are among the causes of mushroom discolouration. The aim of this work was to study the use of metabolic fingerprinting and metabolic profiling tools for the detection and discrimination of mechanical damage on mushrooms. This research involved: 1. Investigating whether the chemical changes induced by mechanical damage and ageing of mushrooms could be (a ...


Efficacy Of Ozone And Ultrasound For Microbial Reduction In Fruit Juice, Sonal Patil Jan 2010

Efficacy Of Ozone And Ultrasound For Microbial Reduction In Fruit Juice, Sonal Patil

Doctoral

Concerns have arisen regarding the microbiological safety of fruit juices due to a number of outbreaks associated with pathogens. Non-thermal technologies for the inactivation of microorganisms are of increasing interest to the food industry for the control of spoilage as well as safety concerns. The objective of this thesis was to investigate the efficacy of ultrasound and ozone treatments for control of microbial issues associated with fruit juices. Inactivation of Escherichia coli (ATCC 25922, NCTC 12900) using power ultrasound was found to be influenced by strain, prior acid adaptation and suspension liquid, but the effect was negated at the higher ...