Snail meat is used daily in the human diet. Snails are used in human nutrition daily in some regions of the world. According to measurable attributes of proteins and lipids quality, snails fall into the middle category of this source of nutrients. The paper describes nutritive attributes of snail's quality from the aspect of macro and micro nutrients. In the composition of essential amino acid leucine and lysine are dominant, and tryptophan is missing. Essential fatty acids are relatively high in snails, especially linolenic and arahidonic acid, but some polyunsaturated omega-3 fatty acids, such as EPA. Out of mineral material copper, iron and magnesium take an important place. With regard to methods of diet and residence snail meat can be loaded to certain heavy metals, residues of radioactive substances and pesticides. These are reasons to control the snails before processing in order to increase safety of the obtained product.
Abstract:The paper presents the results achieved during the process of nickel removal from aqueous solutions by adsorption on alumina (Aluminum oxide) in continuous conditions. The continuing experiments were conducted in a glass column with diameter of 16 mm and fi xed bed of adsorbent with quantity ranging from 30 to 115 g, adsorbent grains size from 1.0 to 2.0 mm, and retention time of 0.5 to 12 minutes. The quantity of nickel in the aqueous solutions was changed within the range of 0.045 up to 0.12 mg/l Ni. The analysis of the obtained experimental data defi ned the mutual affection of the retention time, the initial nickel concentration in the water, and the adsorbent quantity, i.e. the content of the adsorbent in the treated solution to the adsorbent capacity.According to the achieved results, logarithmic mathematical model showed best correlation between experimental and calculated values, also maximum nickel ions adsorption uptake onto the alumina were determined as 400 mg/g.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.