ERA’S JOURNAL OF MEDICAL RESEARCH
USES AND PROSPECTS OF NANOTECHNOLOGY IN FOOD & NUTRITION:
Department of Nutrition & Zoology
Era's Lucknow College of Management & Education, Ghaila, IIM Road, Lucknow, U.P.,
Use of nanotechnology in food science to increase/alter nutritive value and shelf life of food has provided lot of dimensions in research to meet out the need of food for globally growing population. Fortification of food with nano nutrients and also the use of nanotechnology to enrich the nutritive values of food have explored avenues in nutritional science for the production of highly nutritive food products required for different diseases, gender based requirements, age wise need and variable requirements under different climatic conditions. On the other hand discussions have also initiated about the safety of nano food for consumption, its assimilation in human system and its acceptance by human body. This review briefs the use of nanotechnology in food industry for improvising the quality and quantity of food with keeping an eye on health and environmental concerns.
Received on :
Accepted on :
Address for correspondence
Dr. Sunil Dhawan
Department of Nutrition & Zoology
Era's Lucknow College of
Management & Education,
KEYWORD: Nanostructure, Nanofood, Nano encapsulation, Nanosize, Antioxidants
C12ve results in food science. Food scientists are emphasizing in development of new properties of food using nano technology, encapsulation of bioactive food to enhance their nutritive value, use of nano particles for biosensing of food borne microbes and packaging of food to enhance shelf life.
This is a technique to pack substances in the form of nano composite, nano emulsification and nano structuration having controlled release(1). The bioactive compounds like carbohydrates, lipids, proteins, vitamins and
antioxidants are when protected with nano encapsulation their stability increases. This technique cuts cost for formulators reducing the quantity of active ingredients. Nano encapsulation technology has the potential to meet challenges concerning the effective delivery of health functional ingredients and control release of flavor compounds. Zein, the prolamine in corn endosperm binds and enrobes lipids protecting them from deterioration. Soy lecithin is the main structural ingredients in the formation of aqueous nano dispersions that carry high loads of
NANO MATERIALS IN NUTRITION
Variety of food products have been developed by nano materials(1). Nano materials are helpful in development of healthy and nutritive food. Nano materials usually occur in the form of uncomplexed metals (e.g. Gold), inorganic metal (e.g. Oxides and iron ) and carbon based compounds ( e.g. polymers ). Most commonly used are
carbon and metal based materials, dendrimeters and composite material. Nutritional supplements in the form of nutraceuticals such as vitamins, antioxidants, fats, proteins, natural extracts and minerals of low bio availability affected by factors such as solubility and stability are results of nanotechnology. Nutraceuticals provide health benefits by effectively delivering nutrients and help to prevent bone diseases, regulate blood glucose, cholesterol levels, reduce the risk of cancer and improve immune system.It has been observed that the benefits of foods are lost because many bioactive compounds are not water soluble like fat soluble vitamins are not readily processed and taken up by the small intestine as water soluble components but are required to undergo a pretreatment phase involving micelle encapsulation to penetrate cells to release their contents. This delay results in the absorption of only 25% after fat digestion and this leads a greater risk to individual with fat related metabolic disorders. The challenge has been to develop methods to solublize these essential components to be effectively absorbed. In food technology many nano encapsulation delivery systems are being used like nano emulsions, surfactant micelles, emulsion bilayers, reverse micelles and functionally designed nano capsules. Micro emulsions have gained much interest because of their useful characteristics and in particular the ability to solubise water soluble compounds at the nano level (3).
ERA’S JOURNAL OF MEDICAL RESEARCH, VOL.4 NO.1
USES AND PROSPECTS OF NANOTECHNOLOGY IN FOOD & NUTRITION: A REVIEW
carbonate in soils. Their further decomposition leads to increase in soil toxicity and environmental deterioration. Use of nano materials is growing in farming. Environment friendly fertilizers are developed to decrease green house emissions. Nano materials with fertilizers reduce green house emissions and increase fertilizer efficiency by incorporating carbon nano constituents viz.
NANOTECHNOLOGYAND FOOD SAFETY
Food preservation and increase in its shelf life always have been a problematic concern for industry. Illness and causalities due to food borne microorganisms and pathogens have been a great financial load on health industry (5). Nanocomposite materials have shown several advantages over conventional food packaging material due to their superior polymeric properties reinforced by the addition of nanosized particles. These nanomaterial polymers are highly suitable for food storage because their structures are much less permeable to gas than other materials(6). They are also able to maintain their resistant properties at half the thickness of other nanocomposites, therby, offering cheaper production cost and light weight materials. Wastage and spoilage of food when exposed to atmosphere or moisture or light is another universal problem of food industry. Enhancement of barrier properties of packaging by addition of nanomaterials decreases entry of atmospheric agents. Low permeability nanocomposites have been developed by blending nanocomposites such as nanoclays with thermoplastics and elastomeres (7) for consumer products and food packaging among other applications. Food industry is striving for development of antimicrobial food packaging to increase quality as well as shelf life of food products.
SAF TY CONC RNS OF NANOFOODS
Availability of nanofoods in market has largely attracted concerns on health issues, safety and quality. Health issues associated with use of nanomaterials in food have not been assessed till date. Nanotech properties of food materials may result in toxicological eventualities when they come in contact of human body via digestion. The risks are largely associated with inhalation, ingestion and skin absorption of nanoparticles of unknown toxicities.
Toxic effects of nanoparticles on animals have been observed by food scientists (8). This reflects an urgent need of systematic studies of nanotoxicity on animals and human beings.
FUTRE PROSPECTS OF
IN FOOD INDUSTRY
Nanotechnology is very useful in food industry having lots of potential in the area. It can meet out with the challenges of food deterioration during storage. Healthy food for globally growing population especially in India is a big challenge. Nano food can incorporate merits of multiple foods in single food product. Further researches in nanotechnology be benefitting in packaging and transportation of food. Cost cutting of food production is possible with the use of nanotechnology. Use of nano fertilizers and development of crops immune against devastating pest infestations with the help of nanotechnology may lead to increase in cultivation. However, standard rules and regulations are still to be defined for the use of safe nanotechnology.
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How to cite this article : Dhawan S., Uses And Prospects of Nanotechnology In Food & Nutrition: A Review, Era's Journal of Medical
ERA’S JOURNAL OF MEDICAL RESEARCH, VOL.4 NO.1