■硬罐是传统的猫粮罐装容器,但半刚性托盘/浴缸和柔性袋也是受欢迎的选择。尽管如此,很少发表关于罐装猫食品容器特性对热加工和B族维生素保留的影响。因此,目的是评估容器大小和类型对热处理和B族维生素滞留的影响.
■处理以阶乘方式排列,具有两种容器尺寸[小(85-99克)和中等(156-198克)]和三种容器类型(柔性,半刚性,和刚性)。准备了罐头猫粮配方,已填充,并密封在容器中,然后进行蒸煮处理,以达到8分钟的加热循环目标致死率。使用内部干馏和容器温度来计算累积的致死率。硫胺素,核黄素,烟酸,泛酸,吡哆醇,生物素,叶酸,钴胺素,商业实验室分析了干馏前后样品中的水分含量。分析了热加工指标(SASv.9.4;SAS研究所,凯里,NC)具有容器尺寸的固定效果,容器类型,和他们的互动。干物质基础维生素B含量与容器大小进行分析,容器类型,处理阶段,以及所有双向和三向相互作用作为固定效应。使用Fisher的LSD在P值<0.05下分离平均值。
■半刚性和柔性容器(平均14.99分钟)的总累积致死性比刚性容器(12.86分钟)更大(P<0.05)。半刚性和柔性容器的更大处理可能受到所需的蒸煮设置的影响。硫胺素和核黄素含量下降了30.4%和18.3%(P<0.05),分别,由于蒸馏处理。烟酸,生物素,和钴胺未受处理影响(P>0.05)。加工量增加(P<0.05)泛酸(9.1%),吡哆醇(22.6%),和叶酸(22.6%)。这可能是由采样或分析变化引起的。任何B族维生素都没有涉及加工阶段的相互作用(P>0.05)。B-维生素保留不受包装处理引起的热加工差异的影响。硫胺素和核黄素是唯一受加工有意义影响的B族维生素,并且保留没有任何容器特征改善。
UNASSIGNED: Rigid cans were the traditional container for canned cat foods, but semi-rigid trays/tubs and flexible pouches are popular options as well. Despite this, little is published on the effects of canned cat food container characteristics on thermal processing and retention of B-vitamins. Therefore, the objective was to evaluate the effects of container size and type on thermal processing and B-vitamin retention.
UNASSIGNED: Treatments were arranged in a factorial with two container sizes [small (85-99 g) and medium (156-198 g)] and three container types (flexible, semi-rigid, and rigid). A canned cat food formula was prepared, filled, and sealed into containers before retort processing to a heating cycle target lethality of 8 min. Internal retort and container temperatures were used to calculate accumulated lethality.
Thiamin, riboflavin, niacin, pantothenic acid, pyridoxine, biotin, folic acid, cobalamin, and moisture contents were analyzed in pre- and post-retort samples by commercial laboratories. Thermal processing metrics were analyzed (SAS v. 9.4; SAS Institute, Cary, NC) with the fixed effects of container size, container type, and their interaction. Dry matter basis B-vitamin contents were analyzed with container size, container type, processing stage, and all two-way and three-way interactions as fixed effects. Means were separated using Fisher\'s LSD at a P-value < 0.05.
UNASSIGNED: Total accumulated lethality was greater (P < 0.05) for semi-rigid and flexible containers (average 14.99 min) than for rigid containers (12.86 min). The greater processing of semi-rigid and flexible containers was likely influenced by required retort settings.
Thiamin and riboflavin contents decreased (P < 0.05) by 30.4 and 18.3%, respectively, due to retort processing. Niacin, biotin, and cobalamin were not affected (P > 0.05) by processing. Processing increased (P < 0.05) pantothenic acid (9.1%), pyridoxine (22.6%), and folic acid (22.6%). This was likely caused by sampling or analytical variation. No interaction involving processing stage was significant for any B-vitamin (P > 0.05). B-vitamin retention was not influenced by differences in thermal processing caused by the packaging treatments.
Thiamin and riboflavin were the only B-vitamins meaningfully impacted by processing and retention was not improved by any container characteristic.