Essential Oils And Oleoresins As Bio-preservatives In Food | 4797
Journal of Biotechnology & Biomaterials
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Essential oils (EOs) are aromatic oily liquids obtained from plant material by steam distillation for commercial production.
An estimated 3000 EOs is known, of which about 300 are commercially important and are destined chiefly for the flavours
and fragrances souk. EOs or their components have been reported to exhibit biological activity such as antiviral, antimycotic,
antitoxigenic, antiparasitic and insecticidal properties. The phenolic components are most active and appear to act principally as
membrane permeabilizers. Food preservation is a continuous fight against microorganisms spoiling the food or making it unsafe.
Several food preservation systems such as heating, refrigeration and addition of antimicrobial compounds can be used to reduce
the risk of outbreaks of food poisoning; however, these techniques frequently have associated adverse changes in organoleptic
characteristics and loss of nutrients. EOs could readily be incorporated in manufactured foods that are traditionally associated
with herbs (savoury dishes such as meat and fish dishes, cheese, vegetable dishes, soups and sauces) or with spices (drinks and
desserts containing fruit and/or dairy products). The use of EOs in consumer goods is expected to increase in the future due to the
rise of ?green consumerism?, which stimulates the use and development of products derived from plants. Interactions between EOs
and their components and other food ingredients, stability of EOs during food processing and food additives are key concerns.
Thus the potential value of these agents as natural and biological preservatives will be highlighted which is a niche in the food
Pushpa S Murthy received her Ph.D. degree in Biotechnology at Mysore University, India. Her primary field is Microbiology and biotechnology
with research emphasis on food microbiology, food technology and coffee. She is presently working as a Senior Scientist at Plantation Products,
Spices and Flavor technology department. Her research work involves production of value-added products, Food and Pharmaceutical components,
bioactivity evaluation of the isolated plant extracts or synthesized compounds on food borne pathogenic microbes. Dr. Pushpa S Murthy holds
patents, process know ?how and is the author of peer-reviewed papers, book chapters, and reviews. She is a member of Association of microbiologist
of India, society of Biological sciences and also association of Food scientist and technologist of India.
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