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首页> 外文学位 >Accelerated shelf life of a health bar contained in different bio-based packaging materials.
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Accelerated shelf life of a health bar contained in different bio-based packaging materials.

机译：包含在不同生物基包装材料中的健康棒的保质期延长。

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摘要

Health foods and environmentally safe packaging are ongoing concerns for manufacturers and consumers. The purpose of this study was to compare the shelf life of an intermediate moisture chocolate health bar in its current package to the shelf life of the same health bar in two different bio-based packages. The renewable resources used to create bio-based packaging materials are more environmentally safe than conventional packages used today. This could ultimately reduce costs to manufacturers and lower prices of the health bar for consumers.;The health bar in this study has an actual shelf life of six months. For this study, an accelerated storage of three months was used to observe the property changes of the health bar and its packages. The original packaging material (control) was metallized-oriented polypropylene (Met-OPP). The two bio-based packaging materials (variables) were polylactic acid (PLA) and sugarcane polyethylene (SPE). The two bio-based materials were each laminated to metallized cellophane (Met-Cell). Duplicating the original package, the bio-based packages were created using a double heated bar sealer. Samples were repackaged into these bio-based packages and stored in an environmental chamber at 35°C, 75% relative humidity (% RH) for 10 weeks. Before all analyses, the seal integrity of all packages was checked. Product analyses included: (1) microbial, (2) percent moisture content, (3) sensory, (4) texture and (5) water activity. Film analyses included: (1) seal-peel, (2) tensile strength, (3) tater vapor transmission rate (WVTR) and (4) oxygen transmission rate (OTR). Before all film analyses, the thicknesses of the film samples were observed.;All samples were analyzed on weeks 0, 2, 4, 6, 8 and 10 in triplicate for each treatment, except for sensory, tensile, seal-peel, WVTR and OTR analyses. Tensile and seal-peel analyses were performed with five replicates for each treatment. WVTR and OTR analyses were performed on weeks 0, 5 and 10 in duplicate for each treatment. Two statistical models were used to analyze the data collected: (1) film and product data were analyzed by Analysis of Variance (ANOVA). This analysis were performed at a 0.05 significance level. Based on these analyses, the PLA package compared best to the original package of the chocolate health bar.
机译：保健食品和环境安全包装一直是制造商和消费者关注的问题。这项研究的目的是将中间水分巧克力保健棒在其当前包装中的保存期限与同一保健条在两种不同生物基包装中的保存期限进行比较。用于生产生物基包装材料的可再生资源比当今使用的传统包装在环境方面更安全。这最终可以减少制造商的成本，并为消费者降低健康条的价格。；本研究中的健康条的实际保存期限为六个月。在本研究中，使用了三个月的加速存储来观察健康棒及其包装的属性变化。原始包装材料（对照）是金属化聚丙烯（Met-OPP）。两种基于生物的包装材料（变量）是聚乳酸（PLA）和甘蔗聚乙烯（SPE）。将两种生物基材料分别层压到金属化玻璃纸（Met-Cell）上。复制原始包装后，使用双加热棒封口机创建了生物基包装。将样品重新包装到这些生物基包装中，并在35°C，75％相对湿度（％RH）的环境室内保存10周。在进行所有分析之前，请检查所有包装的密封完整性。产品分析包括：（1）微生物，（2）水分含量百分比，（3）感官，（4）质地和（5）水分活度。薄膜分析包括：（1）密封剥离，（2）拉伸强度，（3）tater蒸气透过率（WVTR）和（4）氧气透过率（OTR）。在进行所有薄膜分析之前，先观察薄膜样品的厚度。所有样品在第0、2、4、6、8和10周一式三份进行分析，除了感官，拉伸，密封剥离，WVTR和OTR分析。每种处理进行五次重复的拉伸和密封剥离分析。每种治疗分别在第0、5和10周进行WVTR和OTR分析。使用两个统计模型来分析收集的数据：（1）通过方差分析（ANOVA）分析胶片和产品数据。该分析以0.05的显着性水平进行。根据这些分析，PLA包装与巧克力保健棒的原始包装相比最佳。

著录项

  • 作者

    Gibbs, Gina.;

  • 作者单位

    Clemson University.;

  • 授予单位 Clemson University.;
  • 学科 Packaging.;Food science.
  • 学位 M.S.
  • 年度 2015
  • 页码 97 p.
  • 总页数 97
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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