|
The method of extraction of heavy metals such as mercury from fish raw |
|
IPC classes for russian patent The method of extraction of heavy metals such as mercury from fish raw (RU 2167541):
The way to reduce the high level of nitrates in plants ascorbic acid / 2134043
The invention relates to the field of plant physiology, in particular to the regulation of metabolism, and can be used to produce organic agricultural products
Method for the production of vegetable and fruit puree canned / 2007100
The invention relates to food industry, namely the production of vegetable and fruit puree canned
Method for preliminary thermal processing of grain and equipment for preliminary thermal processing of grain / 2300900
Method involves steps of controlled charging of soya beans into reactor; creating first low pressure in reactor; heating soya beans charged into reactor; creating second low pressure in reactor and cooling soya beans. Equipment for effectuating said method has one reactor which may be connected to low pressure creation means.
Method for reducing of acrylamide formation in heat treated foodstuff, obtained foodstuff and application of asparaginase in said method / 2302745
Claimed method includes application of foodstuff ingredient containing free asparagine, asparagine inactivation in foodstuff ingredient by contacting of asparagine-containing foodstuff ingredient with asparaginase. Said foodstuff ingredient is used as component in mixture for foodstuff production. Mixture is heated to produce foodstuff. Method of present invention makes it possible to reduce acrylamide content in foodstuff by 99.9 % or more.
Method for extracting of radio toxins of cesium 134, 137 from raw meat material / 2304883
Method involves washing, deboning, trimming, grinding, soaking and salting raw meat material; separating meat fraction from brine; massaging raw meat material before soaking and salting processes; soaking in milk curdle whey having temperature of 5-10 C during 30 min, with raw meat material to milk curdle whey ratio being 1:3-1:5; salting in milk curdle whey having temperature of 5-10 C using 20-30 g of edible salt per 1 l of whey. Method allows residual content of cesium 134, 137 in meat and meat products obtained by processing of livestock and pigs grown in zones with radio toxin contaminated earth to be reduced.
Production method of semi-finished products of turnip (variants) / 2324371
One opens the capillars of turnip roots cutting the herbage and root, freezes to its full depth. When freezed the roots are boiled in the tank under the pressure till the semi-finished condition. The tank with roots is cooled at room temperature. The cooled roots are peeled and chopped. They are packed in antiseptic conditions in special tare and like this or freezed the semi-finished products are supplied to the consumer.
Method of raw milk purification from lead / 2326549
Method consists in introduction into raw milk, which is contaminated with lead in concentration of (1.1...4.0)±0.1 from maximum permissible concentration (MPC) of sorbent in the capacity of which the polyphepan is used in proportion from 0.3:1000. Purification is performed until concentration of 0.5 MPC and lower. Contact is performed at temperature of 6°C for 5 minutes with mixing. Then raw milk is purified from sorbent by centrifugal method in separator-milk-purifier for cold purification. Method allows to reduce the concentration of lead in raw milk down to (0.28-0.40)±0.1 MPC with degree of purification of (76-90)±1% accordingly.
Method of raw milk purification from cadmium / 2327357
Method consists in purification of milk contaminated with cadmium with concentration of (1.1-3.0)±0.1 MPC (maximum permissible concentration), by means of polyfepan powder in proportion of 0.3:1000, contact is executed at temperature of 6°C during 20 minutes, or in proportion of 0.6:1000 at temperature of 45°C during 5 minutes with mixing. Sorbent cleaning is done by centrifugal method in separator-milk purifier.
Method for acrylamide formation reducing / 2390259
Series of inventions relating to the technique of decreasing of acrylamide amount in starch-containing food products, being thermally treated. Combination of two or several agents, which reduce acrylamide, added to a ready-for-use starch-containing food product, before its preparation for reducing of acrylamide formation. Ready-for-use food product for example can be corn or potato crisps. Alternatively, thermally treated food product, such as potato crisps of potato splices, can be in a contact with solution that contains two or more agents, which reduce acrylamide before preparation. Acrylamide reducing agents can include asparaginase, divalent or trivalent cations and different amino acids and thiols. Acrylamide reducing agents can be added into a dry mix, wet mix or other mixes while mincing, in such a way that these agents would be included in the whole starch-containing food product.
Method for reducing acrylamide formation / 2423876
Invention relates to food industry. Under the method proposed a food product of vegetal origin is used that contains asparagines between its cell walls. The cell walls are slackened through bringing them in contact with one or more cell wall slackening mechanism(s). The cell wall slackening mechanism may involve application of microwave radiation energy, ultrasonic radiation energy, pulsing or steady differential pressure, an enzyme slackening cell walls and lime. Slackened cell walls are brought in contact with an agent decreasing acrylamide content; the food product is warmed. Additionally proposed is a food product having undergone thermal treatment.
Method for production of milk stock for functional products manufacture / 2436412
Invention relates to dairy industry, in particular, to purification and preparation of milk stock contaminated with lead at a concentration of (1.1…4.0)±0.1 of MAC, down to concentration 0.5 MAC and lower; the method includes sequential contact with a polypefan sorbent and an enterosorbent introduced into the milk at a ratio of 0.3:1000 and 1+0.01…0.05:1000 accordingly, contacting is performed under stirring conditions at a temperature of 6°C during 5 minutes, the enterosorbent is represented by tetacinum-calcium powder.
Method of raw milk purification from toxic metals / 2441397
FIELD: food industry. SUBSTANCE: this invention covers method of raw milk purification from toxic metals and includes adding of a sorbent agent, purification from sorbent agent, herewith raw milk intoxicated with metals in (1.1…4.0)±0.1 MAC concentration undergoes purification. Purification is performed until 0.5 MAC ratio is reached; contact with a sorbent agent is performed at 6°C, 5 minutes with mixing. Purification from a sorbent agent is performed by a centrifugal method at the separator-milk purifier for cold purification, herewith grapheme powder of 0.1:1000 ratio is used as a sorbent agent. EFFECT: decrease of toxic metals concentration in raw milk to (95…97)±1% degree of purification. 1 dwg, 2 tbl, 2 ex |
(57) Abstract: The invention relates to the processing of aquatic organisms and can be used to remove from fish raw mercury. As means for removing heavy metals from fish raw use ascorbic acid solution with concentration of 0.1% when the ratio of the solution and the fish of 1.5:1. When using as extractant ascorbic acid, which is a strong reducing agent, for a relatively short time derived from the product of a large part of the contained mercury. The invention will increase the number extracted from the raw material of mercury, with the minimum duration of the process. The present invention relates to the field of processing of water bodies, in particular to the problem of removal of fish raw materials heavy metals such as mercury. The known method of removing mercury from fish sources, such as meat, coal fish, by placing the raw material for a long time (about 72 hours) in a solution of testingground with the concentration of the solution to 1 % (Teeny F. M., Hall, A. S., Gauglitz E. J. Reduction of mercury in sablefish, anoplopoma fimbria, and the use of the treated fish in smoked products. Marine fish. Rev. 1974, 36, N 5, 15-19, i 11, tabe Bibliogr. 5 ref.)The disadvantages of this method can unnuh nutrients. Moreover, this method is not effective - it is possible to reduce the mercury content in the raw material is only 8%. The known method of removing mercury from objects fisheries through the use of hydrochloric acid cysteine, in a solution which contains raw materials (Spinelly J., Steinberg, M. A., Miller R., Hall, A. L. Zerman Reduction of mercury with cystcine in comminuted halibut and hake protein concentrate "J. Agr. And food Chem." 1973, 21, N 2, 264-268). Depending on the concentration of hydrochloric acid and the exposure time of the substrate in solution, this method allows to reduce the mercury content in the solution is from 40 to 20%. The disadvantages of this method should also include the duration of the extraction of mercury from raw materials and low quality product as a result of using these extractants. The closest to the essence and the achieved result is a method of processing fish raw ascorbic acid solution (Express information TSNIITMASH series: Processing of fish and seafood, vol. 4, M: Misrephoth USSR, 1984). This extractant, as ascorbic acid, safe for human health and at the same time is a strong reducing agent. The disadvantages of this method include the lack of proven Tehnologichesky and so on), necessary for implementing the method. The purpose of the creation of the proposed method of removal of heavy metals such as mercury from fish raw is to improve the quality of the product by reducing the time of extraction and determination of optimal values of the concentration of the acid solution and the volume ratio of fish raw materials and acids. This goal is achieved by the fact that raw fish for about 10 minutes immersed in the prepared ascorbic acid solution with concentration of 0.1%. The ratio of the solution and the fish shall be 1.5:1.0 in. These options are most appropriate, as in the course of the experiments, it was found that the decrease in the solution concentration up to 0.05% led to a decrease in the number of recoverable mercury by 15%. Increasing the solution concentration to 0.3% also resulted in a decrease in the number of recoverable mercury by 35-37% for the maturation of raw materials in the solution for 10 minutes. Increasing the exposure time to 20 minutes also did not increase the percentage of recoverable mercury, and Vice versa, reduced by 20-25%. The authors of the method was selected as the most optimal ratio of ascorbic acid solution and fish raw, ulala 1:1. In this case, mercury was extracted less. The use of ratios of 1.5:1 allowed us to increase the amount of recoverable mercury by 20%. The advantages of this method include that as an extractant use of ascorbic acid, which has no harmful effect on the human body. At the same time, as a strong reducing agent, ascorbic acid can quickly remove from the product of significant amounts of mercury, without compromising the quality of the product. An example of the method. Prepare a solution of ascorbic acid in fresh water with a concentration of 0.1%, immersed in 1 kg of fish raw materials, such as chopped into pieces of meat big-eyed tuna, swordfish, sharks Mako and so on, the mercury content in which was 0.920 mg/kg, the ratio of solution and raw materials shall be 1.5:1, and the time is 10 minutes. After extraction, the extract pieces and determine the amount of mercury. While the mercury content determined by the method of flameless atomic adsorption on mercury analyzer MASS-50 firms "Coleman". Studies have shown that the number of extracted mercury was 55.5%. The method of extraction of heavy metal is that prepared ascorbic acid solution with a concentration of 0.1% and on time, approximately 10 min, immersed in his fish raw materials, and the ratio of the solution and the fish is 1.5 : 1.
|
© 2013-2015 Russian business network RussianPatents.com - Special Russian commercial information project for world wide. Foreign filing in English. |