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Impact of biobased packaging materials on quality of fully-baked frozen bread

In English

Författare

  • Yoga Putranda

Summary, in English

The performance of five commercial available biobased packaging films for fully-baked frozen bread was studied in comparison to polyethylene (PE) film. The main purpose of this study was to understand how biobased packaging materials affect the quality of fully–baked frozen bread. The five biobased packaging films evaluated in this study were biobased polyethylene (bio-PE), Biodolomer®, polylactic acid (PLA), polybutylene succinate-co-adipate (PBSA), and paper laminated with biobased polyethylene terephthalate (paper/bio-PET). Two types of commercial fully-baked frozen bread were used i.e. hotdog buns and hamburger buns. The fully-baked buns were repacked manually in each packaging bag, sealed with a clip, and frozen for minimum 3 days. Weight loss, textural properties, water activity, and the appearance of the buns were evaluated 1, 3, and 7 days after thawing. Water vapor transmission rate (WVTR) of bio-PE was similar to the PE reference (6.37 g/m²day), while Biodolomer®, PLA, PBSA, and paper/PET WVTR values were higher than PE reference, 71.1, 61.70, 140.12, and 25.09 g/m²day respectively. The bio-PE could maintain all the investigated quality aspects of the packed buns along shelf life. A triangle test confirmed that there was no significant difference between hotdog buns packed in bio-PE and PE reference. Despite missing of transparent property, paper/bio-PET could maintain some of the bun quality aspects except the textural properties and weight loss (hotdog buns). Buns packed in Biodolomer®, PLA, and PBSA films showed quality loss i.e. higher weight loss already at day one after thawing and dry edge in the buns after 7 day-shelf life.

Summary, in English

Changing bread plastic packaging to biobased packaging

Biobased packaging materials could be alternatives for petroleum-based plastic film. The performance of commercial biobased packaging materials were compared to petroleum-based polyethylene (PE) for bread packaging application.

Publiceringsår

2017

Språk

Engelska

Dokumenttyp

Examensarbete för masterexamen (Två år)

Ämne

  • Technology and Engineering
  • Agriculture and Food Sciences

Nyckelord

  • biobased packaging material
  • buns
  • packaging
  • polyethylene
  • quality

Handledare

  • Märit Beckeman
  • Karla Marie Batingan Paredes (Ph.D. Student)

ISBN/ISSN/Övrigt

  • ISBN: 978-91-7753-365-8