Photothermal-responsive multifunctional silk fibroin-based composite film with dialdehyde cellulose and nanoparticles for extending shelf life of blueberries.
Wang JD, Niu YR, Yang SL, Liu GS, Zhou Q
Sustainable Packaging
Blueberries you grow or buy could stay fresh significantly longer — and the packaging keeping them that way would decompose in your compost bin within three weeks.
Scientists made a new kind of food wrap by combining silk protein with nano-sized particles derived from rose hip pomace (the leftover pulp after juice extraction) and green tea extract. When you shine a special light on the wrap, it heats up and releases the green tea compounds, which kill harmful bacteria. Blueberries stored in this wrap stayed fresher longer, and the wrap itself broke down completely in soil within 21 days.
Key Findings
The composite film reached 82°C under near-infrared light at 40 mg nanoparticle loading, enabling photothermal sterilization.
The SF-40 film achieved 100% inhibition of E. coli under near-infrared irradiation.
The silk fibroin-based films fully biodegraded within 21 days, and blueberry preservation tests showed reduced decay rate and weight loss.
chevron_right Technical Summary
Researchers created a biodegradable food packaging film using silk and waste from rose hip processing that can be activated by near-infrared light to kill bacteria and extend blueberry shelf life.
Abstract Preview
Food safety and environmental concerns drive the search for innovative food packaging. This study presented the development of a novel degradable multifunctional packaging film based on silk fibroi...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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The rose hip or rosehip, also called rose haw and rose hep, is the accessory fruit of the various species of rose plant. It is typically red to orange, but ranges from dark purple to black in some species. Rose hips begin to form after pollination of flowers in spring or early summer, and ripen i...