The effect of partial substitution of NaCl with KCl on the physicochemical, microbiological and sensory properties of Akkawi cheese.


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BACKGROUNDStudies have shown a direct relationship between increased dietary sodium intake and chronic diseases such as hypertension, cardiovascular disease and osteoporosis. Potassium chloride is the most widely used salt substitute for sodium chloride in different processed foods. Akkawi cheese, commonly consumed as fresh cheese, has a semi-hard curd, chalky color, firm texture and salty flavor. The effect of partial replacement of NaCl with KCl on the chemical, textural, microbiological and sensory characteristics of fresh and mature Akkawi cheese was investigated. RESULTSSalt treatment (NaCl reduction) had a significant effect on pH, lactic acid, sodium and potassium contents of cheeses. Texture profile analysis revealed a significant effect of salt treatment on adhesiveness, chewiness and hardness of cheese. All tested microorganisms increased with storage but in general did not differ between salt treatments, specifically between control (100% NaCl) and (70% NaCl, 30% KCl) samples. Descriptive analysis showed that salt treatment had a significant effect on bitterness, crumbliness and hardness, whereas the age of cheese was significant for color and fermented flavor. Salt treatment had no effect on acceptability variables for all experimental 2-week Akkawi samples. CONCLUSIONThe above results suggest that a 30% substitution of NaCl by KCl (70% NaCl, 30% KCl brine) is acceptable. (c) 2014 Society of Chemical Industry
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Key words
Akkawi,potassium chloride,sensory,salt
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