am looking for a seminar topic on food:it's preservatives,additives and application.

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seminar topics on food:it's preservatives'additives and applications

Foods are substances or mixture of substances both solid and/or liquid, which are intended for human consumption or ingestion for their nutritional of pleasurable benefits. The classification of food, its storage and chemistry were treated in this study. Different methods of food preservations which include drying (spray drying, freeze drying), freezing, vacuum-packing, canning, sugar crystallization, pickling, food irradiation, etc. and its effect were also reviewed. Further, Food additives and its effect, and significance of food preservatives and additives were also explained in this review.