Job offersmore »

Tweeting Growers

Top 5 - yesterday

Top 5 - last week

Top 5 - last month

Exchange ratesmore »

Indian researchers increase tomato shelf life

Researchers at Indian Institute of Technology (IIT) Hyderabad have been successful in keeping tomatoes fresh and without any microbial spoilage for as long as 30 days. This was possible thanks to the food packaging material developed by a two-member team led by Dr. Mudrika Khandelwal from the institute’s Department of Materials Science and Metallurgical Engineering. The food packaging material is made of bacterial cellulose impregnated with silver nanoparticles.

Bacterial cellulose was first prepared by using Gluconacetobacter xylinus bacteria to produce semicrystalline cellulose nanofibre from a standard glucose media. “We can use any fruit juice that is rich in sugar or even beer and wine, which are fermented, to produce bacterial cellulose,” says Dr. Khandelwal.

At room conditions, tomatoes wrapped in the composite remained fresh without any wrinkles or microbial spoilage even at the end of 30 days.

“This is because besides antimicrobial activity, the composite also allows appropriate exchange of gases and moisture. The water holding capacity of the composite helps maintain optimum moisture transmission,” says Shivakalyani Adepu from the Department of Materials Science and Metallurgical Engineering at IIT Hyderabad and first author of the paper. “The composite also acts as ethylene blocker thus preventing excess ripening of fruits. It ensures that fruits age slowly.”

On the contrary, tomatoes wrapped with polyethylene started wrinkling within the first week, and microbial spoilage was seen within 15 days; tomatoes had completely deteriorated within 30 days. But in the case of polypropylene, tomatoes remained fresh for a week; they started wrinkling within 15 days and became soft and wrinkled all around within a month.

Read more at The Hindu (R. Prasad)

Publication date: 3/12/2018



Other news in this sector:

3/16/2018 Germany: Suspicious package in tomato tin leads to police involvement
3/7/2018 Italian company develops compostable labels
3/5/2018 30% more productivity and fewer failures
3/2/2018 California company introduces its first foodservice fresh-cut salad
2/27/2018 CAN (ON): Packaging partnership ensures year-round fresh produce
2/20/2018 Automato focuses on self-service trend
2/14/2018 "Try a more cosy relationship with your packaging supplier"
2/13/2018 A heart full of strawberries for lovers this Valentine's Day
2/13/2018 100% recyclable plant pots look to increase sustainability in horticulture
2/13/2018 Green and versatile packaging system for fresh produce
2/8/2018 New packaging for vegetables exported from Guatemala to the US
2/8/2018 US (NH): New clamshell packaging to meet customer demand
2/6/2018 Reclosable packaging films
1/11/2018 New produce printing method uses food colouring
1/9/2018 Germany: Handheld inkjet
1/2/2018 "People consume about 40% more fruit if it's peeled and sliced"
1/2/2018 Modified atmosphere packaging for the retail market
12/22/2017 Three plants package TRIO is a hit for Hishtil
12/14/2017 Maximum protection and ventilation for the plants in transit and on display
12/8/2017 Delassus shows off new look for its snacking tomatoes