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Vol. 18 (2015 year), No. 4
Mukatova M. D., Zotova N. Yu.
Whey as a solvent of medium weight chitosan
The possibility of using whey – dairy industry liquid wastes containing more than 200 organic substances – as a solvent of chitosan of definite molecular weight has been considered. Samples of whey selected on dairy plants, medium weight chitosan and their solutions in whey have been studied. It has been found that the sample of chitosan Mm 28.5 kDa is soluble in whey (solids of not more than 5 % and pH = 4.85) and forms viscous solution with concentration 0.72 %, dynamic viscosity 0.016 Pa•s. This solution is stable without phase separation during storage at ambient temperature
(in Russian, стр.5, fig. 0, tables. 5, ref 3, Adobe PDF, Adobe PDF 0 Kb)
Vol. 18 (2015 year), No. 4
Mukatova M. D., Kirichko N. A., Romanenkova E. N.
Quality features of chitin and chitosan
produced from crayfish crust-containing waste
The method for producing chitin from crust-containing raw material of crayfish using demineralization of 8 % hydrochloric acid and enzymatic deproteining by protosubtilin GZh 70 units / g has been tested; the output of chitin is 8–9 %. Chitosan (molecular weight 48,7 kDa, deacetylation degree 85 %) soluble in 1 % solution of lactic acid has been produced from high-purity chitin
(in Russian, стр.6, fig. 1, tables. 3, ref 8, Adobe PDF, Adobe PDF 0 Kb)
Vol. 19 (2016 year), No. 3, DOI: 10.21443/1560-9278-2016-3
Mukatova M. D., Kirichko N. A., Romanenkova E. N., Zotova N. Yu.
Development of technology
for washed minced fish production from low-profit objects of fishing in the Volga-Caspian Basin
The objects of the study are as follows: rudd and goldfish, samples of food minced made of them without washing, after single and double washings. To study the organoleptic and physico-chemical parameters the conventional methods of the fishing industry have been used. At the LLC "Astrakhan fisheries" two experimental batches of minced rudd and goldfish with double washing by water using a food additive "Omfresh plus" have been made in the amount of 1.0 % by weight of the meat. The yield of washed minced food from rudd is 41.4 %, from silver carp – 41.0 %. Some decrease in water content, water-holding capacity and formalin-titratable nitrogen in minced fish after each washing step has been established. Studying the organoleptic characteristics has shown that the frozen minced briquettes are cuboids, have clean surface with the presence of minor irregularities, colour – light gray, dense texture. On physical and chemical parameters the food washed mince correspond to GOST R 55505–2013 "Frozen food fish forcemeat. Specifications". Water content is 79-82 %, sodium chloride - 0,17-0,35 %, and water-holding capacity - at over 50 %. The proven technology of manufacturing washed minced from goldfish and rudd can be put into production for the purpose of deep processing of unprofitable species of the Volga-Caspian Basin and getting washed minced food and culinary products based on it.
(in Russian, стр.8, fig. 4, tables. 3, ref 7, Adobe PDF, Adobe PDF 0 Kb)
Vol. 19 (2016 year), No. 3, DOI: 10.21443/1560-9278-2016-3
Mukatova M. D., Kirichko N. A.
The technology of fish-vegetable feed production
Perspective direction of the Volga-Caspian basin fisheries is increasing the productivity of aquaculture production which requires the availability of sufficient quantities of feed. The cutting waste of carp and crucian carp, crayfish processing (cephalothorax), wheat bran, soy isolate, freshwater plants – pondweed perfoliate, fish-vegetable ration, produced feeding staffs have been investigated. In researching samples of manufactured pelleted feeds the standard methods adopted in the animal feed industry have been used. The number of nitrogen-free extractives and energy value has been determined by calculation. The composition of fish-vegetable ration has been worked out. Some manufacturing inspection of fish-vegetable feed technology using proofing process has been carried out. The possibility of manufacturing on the basis of crushed fish waste of the company LLC "VES" and dry ingredients of fish-vegetable feed has been determined; the output of feed at water content of not more than 10 % is 43 % of feed mix based on the mass of directed waste equal to 84 %. The pilot batch of dry fish-vegetable feed has been investigated to establish quality indicators. It has been determined that fish-vegetable feed meets the requirements of GOST 10385–2014 "Combined feeding staffs for fishes. General specifications" as for main quality indicators and refers to economic grower for catfish and carp fish weighing more than 50 g. This reveals good palatability of the experimental batch of floating feed by carp fish species and African catfish. Thus, fish-vegetable feed manufacturing technology can be implemented in the production for processing secondary raw materials: waste from butchering fish by grinding, cooking, mixing with selected vegetable fillings which is waste of flour or grain processing industries and freshwater plants mowed annually during the reclamation works on the Volga delta.
(in Russian, стр.7, fig. 1, tables. 3, ref 8, Adobe PDF, Adobe PDF 0 Kb)