Abstract Oxygen scavenging film based on a catalytic system with palladium (CSP) was used to prevent lipid oxidation in linseed oil. Linseed oil was packaged under normal (NA) or modified atmosphere with 2 vol% oxygen (MA) with or without the CSP and stored at 45 °C for 6 months in darkness. To evaluate the evolution of primary and secondary oxidation products, conjugated dienes/trienes, peroxide and para-anisidine values were measured. Additionally, volatile oxidation products in the headspace were analyzed. While a significantly higher level of oxidation products was measured in linseed oil stored under NA compared to MA without CSP, thresholds indicating good quality oil based on the peroxide value (15 milliequivalents O2/g oil) and the para-anisidine value (2 absorbance units/g oil) were exceeded under both packaging conditions. In packages with the CSP, however, removal of headspace oxygen kept oxidation parameters below these thresholds, indicating good quality oil over the whole storage period.

中文翻译：

---

使用钯基除氧膜防止亚麻籽油中的脂质氧化

摘要 基于钯（CSP）催化体系的除氧膜用于防止亚麻籽油中的脂质氧化。亚麻籽油在常温 (NA) 或气调和 2 vol% 氧气 (MA) 下包装，有或没有 CSP，并在 45°C 下避光储存 6 个月。为了评估初级和次级氧化产物的演变，测量了共轭二烯/三烯、过氧化物和对茴香胺值。此外，还分析了顶部空间中的挥发性氧化产物。虽然与没有 CSP 的 MA 相比，在 NA 下储存的亚麻籽油中测得的氧化产物水平显着更高，但基于过氧化值（15 毫当量 O2/g 油）和对茴香胺值（2 个吸光度单位）的阈值表明油质量良好/g 油）在两种包装条件下均超标。