The Effects of Using Sodium Alginate Hydrosols Treated with Direct Electric Current as Coatings for Sausages
Żaneta Król , Dominika Kulig , Krzysztof Marycz , Anna Zimoch-Korzycka , Andrzej Jarmoluk
AbstractWe investigated the effect of sodium alginate hydrosols (1 with 0.2% of NaCl treated with direct electric current (DC) used as a coating on microbial (Total Viable Counts, Psychrotrophic bacteria, yeast and molds, Lactic acid bacteria, Enterobacteriaceae), physiochemical (pH, lipid oxidation, antioxidant activity, weight loss, color) and sensory properties of skinned pork sausages or with artificial casing stored at 4 degrees C for 28 days. Moreover, the cytotoxicity analysis of sodium alginate hydrogels was performed. The results have shown that application of experimental coatings on the sausage surface resulted in reducing all tested groups of microorganisms compared to control after a 4-week storage. The cytotoxicity analysis revealed that proliferation of RAW 264.7 and L929 is not inhibited by the samples treated with 200 mA. Ferric reducing antioxidant power (FRAP) and free radical scavenging activity (DPPH) analyses showed that there are no significant differences in antioxidant properties between control samples and those covered with sodium alginate. After 28 days of storage, the highest value of thiobarbituric acid-reactive substances (TBARS) was noticed for variants treated with 400 mA (1.07 mg malondialdehyde/kg), while it was only slightly lower for the control sample (0.95 mg MDA/kg). The obtained results suggest that sodium alginate treated with DC may be used as a coating for food preservation because of its antimicrobial activity and lack of undesirable impact on the quality factors of sausages.
|Journal series||Polymers, ISSN 2073-4360, (A 40 pkt)|
|Publication size in sheets||0.95|
|Keywords in English||sodium alginate; direct electric current; antimicrobial; coating; cytotoxicity; antioxidant; color; sensory evaluation; sausage; quality|
|Internal identifier||64263; PX-5a13ec82d5de05f7f497f8ba; PX-5a13f062d5de05f7f497f8c8|
|License||Journal (articles only); published final; ; after publication|
|Score||= 40.0, 02-09-2020, ArticleFromJournal|
|Publication indicators||= 3; = 3; : 2017 = 1.218; : 2017 = 2.935 (2) - 2017=3.509 (5)|
|Citation count*||4 (2020-09-21)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.