Navigation Links
Aloe vera coating may prolong freshness, safety of fruits and vegetables

Aloe vera gel is best known for its therapeutic effect on burned or irritated skin, but in the future you could be eating the gel as a healthful additive to your fruits and veggies. Researchers in Spain say they have developed a gel from the tropical plant that can be used as an edible coating to prolong the quality and safety of fresh produce. The gel, which does not appear to affect food taste or appearance, shows promise as a safe, natural and environmentally-friendly alternative to conventional synthetic preservatives that are currently applied to produce after harvesting, the researchers say.

Although a number of edible coatings have been developed to preserve food freshness, the new coating is believed to be the first to use Aloe vera, according to study leader Daniel Valero, Ph.D., of the University of Miguel Hern�ndez in Alicante, Spain. His study will appear in the Oct. 5 print issue of the American Chemical Society�s Journal of Agricultural and Food Chemistry, the Society�s peer-reviewed publication.

Valero and his associates dipped a group of common table grapes (Crimson Seedless) into Aloe vera gel and stored them for five weeks under low temperature while exposing a group of untreated table grapes to the same conditions. The colorless Aloe gel used in this study was developed through a special processing technique that maximized the amount of active compounds in the gel, Valero and associates say. The gel can also be applied as a spray, they add.

The untreated grapes appeared to deteriorate rapidly within about 7 days, whereas the gel-coated grapes were well-preserved for up to 35 days under the same experimental conditions, the researchers say. The gel-treated grapes were firmer, had less weight loss and less color change than the untreated grapes, measures which correspond to higher freshness, they say.

A sensory panel (10 people) evaluated the quality of both the untreated and the gel -treated grapes by consuming some of the grapes. They found that the gel-treated grapes were generally superior in taste.

The researchers believe that the gel works through a combination of mechanisms. Composed mostly of polysaccharides, the gel appears to act as a natural barrier to moisture and oxygen, which can speed food deterioration. But the gel also enhances food safety, the scientists say. Based on previous studies by others, Aloe vera gel appears to contain various antibiotic and antifungal compounds that can potentially delay or inhibit microorganisms that are responsible for foodborne illness in humans as well as food spoilage.

Although the health effects of Aloe gel on human consumption were not directly measured in this study, the coating is believed to be safe, the researchers say. They note that Aloe vera gel has been used as a functional ingredient in some foods and beverages for years. In addition to preserving table grapes, which are highly perishable, the gel can be applied to other fruits and vegetables, they say. Further testing of the gel on other types of produce is anticipated.

The gel also offers potential environmental benefits, the researchers add. It could provide a greener alternative to sulfur dioxide and other synthetic food preservatives that are commonly used on produce and increasingly the target of health concerns, they say.

Valero and his associates have filed a patent application in Spain for their gel. It could appear in the U.S. consumer market within a year, Valero estimates, noting that the gel is a natural product and is unlikely to face any major regulatory hurdles. Funding for this study was provided by the Spanish Ministry of Science and Technology and the European Commission via FEDER (European fund for regional development).


'"/>

Source:American Chemical Society


Related biology news :

1. Innovative coating could give medical implants a longer life
2. Antibacterial coatings cut infection rates
3. Edible coatings will be the packaging of the future
4. Resveratrol prolongs lifespan and delays onset of aging-related traits in a short-lived vertebrate
5. New engineered drug may offer prolonged arthritis relief
6. Feds give researchers ok for safety test of adult stem cells in patients with heart disease
7. Flesh-eating bacteria escape bodys safety net
8. Magnetism and mimicry of nature hold hope for better medicine, environmental safety
9. How the US drug safety system should be changed
10. Fake pesticides threaten food safety
11. Primates take weather into account when searching for fruits
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/22/2016)... American College of Medical Genetics and Genomics was once again ... of the fastest-growing trade shows during the Fastest 50 Awards ... Las Vegas . Winners are ... of the following categories: net square feet of paid exhibit ... 2015 ACMG Annual Meeting was ranked 23 out of 50 ...
(Date:6/16/2016)... FRANCISCO , June 16, 2016 ... size is expected to reach USD 1.83 ... by Grand View Research, Inc. Technological proliferation and ... banking applications are expected to drive the market ... ) , The development of advanced ...
(Date:6/3/2016)... 3, 2016 Das ... Nepal hat ein 44 ... geprägter Kennzeichen, einschließlich Personalisierung, Registrierung und IT-Infrastruktur, ... Produktion und Implementierung von Identitätsmanagementlösungen. Zahlreiche renommierte ... Januar teilgenommen, aber Decatur wurde als konformste ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... , June 23, 2016   Boston ... of novel compounds designed to target cancer stemness ... has been granted Orphan Drug Designation from the ... treatment of gastric cancer, including gastroesophageal junction (GEJ) ... inhibitor designed to inhibit cancer stemness pathways by ...
(Date:6/23/2016)... , June 23, 2016  The Prostate Cancer Foundation (PCF) is ... treatments and faster cures for prostate cancer. Members of the Class of 2016 ... countries. Read More About the Class of 2016 PCF ... ... ...
(Date:6/23/2016)... NC (PRWEB) , ... June 23, 2016 , ... In ... University Hospital in Denmark detail how a patient who developed lymphedema after being treated ... tissue. The results could change the paradigm for dealing with this debilitating, frequent side ...
(Date:6/23/2016)... ... June 23, 2016 , ... ClinCapture, the only free ... and will showcase its product’s latest features from June 26 to June 30, ... poster on Disrupting Clinical Trials in The Cloud during the conference. DIA ...
Breaking Biology Technology: