DEVELOPMENT OF THE NEW PRODUCTION METHOD OF HEALTHFUL CRYOFROZEN NANOADDITIVES OF CHLOROPHYLL-CONTAINING VEGETABLES USING CRYOMECHANICAL PROCESSES
Authors: Pogarskaya Viktoriya , Pavlyuk Raisa , Pogarskiy Aleksey , Dudnyk Ekaterina , Loseva Svitlana 
Published: December 2019

The aim of the work is to develop the new production method of healthful cryofrozen nanoadditives of chlorophyll-containing vegetables (CCV) in the nanosize form, using liquid and gas-like nitrogen with a high degree of chlorophyll preservation, without losses at defrost and without synthetic admixtures. The new method is based on using cryogenic “shock” freezing and low-temperature comminution as an innovation. Their joint use is accompanied by cryodestruction and cryomechanochemistry processes. The offered method gives a possibility not only to preserve chlorophylls, carotenoids and other BAS of initial raw materials, but also to transform hidden forms of BAS, bound with biopolymers, in free more completely.

Chlorophyll-containing vegetables were used as raw materials: spinach leaves, verdure of celery and parsley. There is offered and developed the new production method of healthful cryofrozen nanoadditives of CCV, allowing not only to preserve chlorophyll, β-carotene and other BAS of initial raw materials, but also to release their hidden, inactive forms more fully. The last ones are bound in fresh CCV in nanoassociates and nanopolymers. At getting cryofrozen additives, there takes extraction (or release) of BAS into the free nanoform, easily assimilated by the human organism. It is established, that fresh CCV contain 3.0…3.5 times more bound inactive chlorophyll, than free one.

It is established, that the use of the new method of processing CCV in cryofrozen additives at cryogenic “shock” freezing to temperature within a product –35…–40 °С and fine-dispersed comminution result in the high degree of releasing hidden forms of chlorophylls and other BAS from vegetables. Their mass share is 2.5…3.5 times more than in fresh vegetables. At developing the new method of getting cryofrozen additives, the essential amount of hidden (bound) forms of chlorophylls and other BAS in CCV were discovered – hidden reserves of raw materials, unknown to the scientific community. It is established, that the storage term of obtained cryofrozen additives of CCV is 12 months, during which chlorophyll is fully preserved. At the same time it is demonstrated, that at defrost of additives with CCV, losses of chlorophyll and other BAS are not observed.

There are also studied enzymatic processes at CCV cryoprocessing, especially the activity of oxidizing enzymes (peroxidase and polyphenol oxidase) that influence a preservation degree of chlorophyll and other BAS. It is established, that at freezing CCV to –18 °С in a product, inactivation of oxidizing enzymes doesn’t take place. At that at further defrost of CCV, there takes place the increase of enzymatic activity in 1.4…1.5 times, comparing with fresh chlorophyll-containing vegetables. It is established, that at cryodestruction of CCV to –35…–40 °С there takes place the complete inactivation of oxidizing enzymes, which activity is not renewed at defrosting a product.

The obtained cryofrozen additives with CCV in the nanosize form are a source of the unique complex of phytocomponents – chlorophyll, β-carotene, vitamin C, polyphenol compounds and other BAS and don’t have analogues in the world. Cryoadditives with CCV are five in one: BAS source, coloring agents, stiffeners, structure-formers and gel-formers. A green line of healthy products is developed, using cryoadditives of CCV: nanosorbets, nanobeverages, sponge cakes, sauces-dressings, cheese desserts and so on