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Cold storage research could put a freeze on red meat waste

October 24, 2023
in Science
Cold storage research could put a freeze on red meat waste
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fridge

Credit: Unsplash/CC0 Public Domain

A new report shows inconsistent fridge temperatures and confusing cold storage advice could be contributing to meat waste in Aussie households.

With Australian households wasting over 140,000 metric tons of meat a year, experts say there’s a growing need to understand how people are using, or not able to effectively use, their fridges to reduce meat waste.

The RMIT-led report, supported by Fight Food Waste Cooperative Research Center and Meat and Livestock Australia, combined existing research with new in-depth interviews and observations in 20 households during warmer and cooler seasons, revealing their shopping, eating, cooking and food storage practices.

The study also monitored fridge and freezer temperatures in 56 households.

Project lead and Research Fellow, Dr. Bhavna Middha, said the findings should concern Australians making an effort to save food and meat from waste due to rising grocery prices.

The research found 17% of fridges monitored were warmer or cooler than the recommended range of 2–7°C.

“When food is too warm, bacteria multiply too fast. When food is too cold, it can freeze or get freezer burn. Both conditions lead to food spoiling,” said Middha, from the School of Global, Urban and Social Studies.

There were also inconsistent temperatures across different fridge shelves, going up to an average of 10°C and down to -1.1°C.

Almost half the freezers monitored had average temperatures outside of the optimal range.

Middha said the fluctuating temperatures could be attributed to how often the fridge was opened.

Households with children reported opening their fridge more often—even up to 20 times a day—possibly affecting the stability of fridge temperatures.

According to Food Standards Australia and New Zealand, potentially hazardous foods need to be kept at under 5°C to prevent food poisoning as these bacteria can multiply to dangerous levels between 5°C and 60°C.

Confusing advice

Factors such as confusing cold storage advice, fluctuating fridge temperatures and social pressures to over-cater at gatherings also contributed to food waste.

“Many households we interviewed said conflicting information about how long food can be kept in the fridge meant a lot of leftovers and uncooked meat was discarded just in case it was unsafe to consume,” said Middha.

“A one-stop advice platform for food storage could be a really useful tool to combat all the conflicting food storage advice that’s confusing households.”

Some households were turning to their freezers as money-saving food storage, buying meat on special with the intention to freeze to prolong shelf life.

“While it might be a great short-term option to save money and expiring meat from waste, this can lead to households buying more freezers to store bulk packs of meat, leading to excess costs and energy consumption,” said Middha.

At the same time, Middha said some households avoided freezing red meat, believing freezing affected the quality of meat as it could lead to freezer burn. They also found thawing meat inconvenient as it takes time and some expertise.

“Our research found households in general are unaware their fridges could be making their food spoil faster, especially if the fridge temperature is warmer than the standard,” said Middha.

“Most households blamed their own behaviors, such as reading the use-by date wrong, before considering their fridge might be the culprit.”

Designing solutions

With the red meat sector contributing to almost 12% of Australia’s net greenhouse gas emissions, Middha said merely informing households about food waste was not enough to bring about change.

“The burden of saving food from waste should be shared among policy makers, product designers, manufacturers, retailers and consumers,” she said.

“Understanding the complexities of household behaviors around food storage can help these stakeholders create better strategies and products that will help save food from waste.”

Middha said fridge designers and manufacturers have an opportunity to design and manufacture cold storage with better shelving and visibility.

“Our research found fridges and freezers were too deep, and lacked useful shelving to give the user visibility of what was being stored, which can lead to food being forgotten,” she said.

Social practices of over-catering at parties and barbeques also needed to be explored, with many households finding it challenging to store and consume leftover cold cuts and BBQ meats, said Middha.

“Maybe resealable packaging can help with storing cold cuts, but after two days in the fridge, many households said they didn’t want to eat the cold cuts for safety reasons,” she said.

“We also need more research into why we feel the need to over-cater social events in the first place and do more to challenge this.”

“Practices of meat consumption and cold storage in Australian households: Consumer fridge behaviour and waste reduction of red meat” was published by Meat and Livestock Australia.

More information:
Practices of meat consumption and cold storage in Australian households: Consumer fridge behaviour and waste reduction of red meat: fightfoodwastecrc.com.au/wp-co … nalReport_FA_digital%201.pdf

Citation:
Cold storage research could put a freeze on red meat waste (2023, October 24)
retrieved 24 October 2023
from https://phys.org/news/2023-10-cold-storage-red-meat.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

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Copyright for syndicated content belongs to the linked Source : Phys.org – https://phys.org/news/2023-10-cold-storage-red-meat.html

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