Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

BIOWASTE REDUCTION

Packaging from passion fruit

ACS Sustainable Chem. Eng. https://doi.org/10.1021/acssuschemeng.8b01101 (2018)

Yellow passion fruit (Passiflora edulis) is grown to produce pulp for juice, food and cosmetics. However, the fruits are more than 60% rinds and seeds, and these by-products are generally treated as processing waste. This waste can be partially used by extracting pectin, linoleic acid or other products. Alternatively, more waste can be used to produce food packaging films, which can replace fossil fuel-based plastics. Similar films have been developed previously using potatoes, pureed bruised fruits, and even flour from passion fruit rinds. However, scaled-up rind processing has been limited.

figure a

Moscow/Moment/Getty

Davi Munhoz and colleagues from the National Nanotechnology Laboratory for Agribusiness and the Federal University of Sao Carlos in Brazil used continuous casting to produce translucent films. They prepared yellow passion fruit rind flour and added pectin, which is naturally present within the rinds, as a matrix-forming agent. To maintain the film’s yellow colour, the temperature was limited to 120 °C. During continuous production, they achieved a productivity of 0.03 m2 of film per minute. They produced films containing 50% rind content with a mechanical strength comparable to traditional polyvinyl chloride cling film. This film can reduce waste, and it is renewable and biodegradable.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Aimee Guha Roy.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Guha Roy, A. Packaging from passion fruit. Nat Sustain 1, 338 (2018). https://doi.org/10.1038/s41893-018-0107-z

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1038/s41893-018-0107-z

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing