Tin octanoate snoct2

Whey powder and sunflower oil were obtained from Borna Laban Dairy (Tehran, Iran), and Nina Co. (Tehran, Iran), respectively. Natureworks Ingeo-4043D PLA (Minnetonka, MN, USA) with a density of 1.2 g.cm⁻³ was used as control sample in this study. Dichloromethane (DCM), chitosan (medium molecular weight, with deacetylation degree of 75–85% and molecular weight of 190–310 kDa), acetic acid, tripolyphosphate (TPP), sorbitan monooleate (Span 80), Aliquat 336, yeast extract, MRS agar, and tin octanoate (SnOct₂) were purchased from Sigma-Aldrich (Steinheim, Germany). Lactobacillus paracasei, Lactobacillus casei, Lactobacillus delbrueckii, Escherichia coli (E. coli), and Staphylococcus aureus (S. aureus) were obtained from Persian Type Culture Collection (PTCC) (Tehran, Iran). Other chemicals and reagents were of analytical grade.

Tin octanoate Sn(Oct)₂ 95% was supplied by Sigma-Aldrich (Tokyo, Japan), diethyl ether 99%, tetrahydrofuran (THF) 99% and ε-caprolactone (CL) 98% by Merck (Tokyo, Japan), and all were used as received. The hyperbranched polyamide polymer (oligomer) (HPPA) was synthesized from the 3,5-diaminobenzoic acid (also from Merck) according to a procedure published previously by the authors [22 (link)].