Navigation Links
The onion, a natural alternative to artificial preservatives

Some components of the onion have antioxidant and antimicrobial properties, making it possible to use this bulb for food preservation. This is demonstrated by researchers from the Polytechnic University of Catalua (UPC) and the University of Barcelona (UB) in a study that has just been published in the International Journal of Food Science and Technology.

"The antioxidant and antimicrobial properties of the flavonoids of the raw onion make it a good candidate for use in food preservation", researcher from the Department of Nutrition and Bromatology at UB and co-author of a project carried out in the Department of Agrifood Engineering and Biotechnology at UPC, confirms to SINC.

The study, that has just been published by the International Journal of Food Science and Technology, shows that the flavonoids of onion, in addition to having beneficial properties for health, increase the life of foods, and so "they are a natural alternative to artificial additives used in the food industry". Flavonoids are phenolic compounds (with the phenol group) which are synthesized by plants.

The results confirm that, especially the yellow variety, is "a good source of these types of substances, and there is a positive correlation between the presence of flavonoids and their antioxidant capacity".

"The onion can be effective for delaying lipid oxidation in emulsions of oil and water a model system of foods like margarines and mayonnaises-, and it also inhibits the growth of microorganisms that alter foods", Santas indicates.

The scientific team analysed onions of the White varieties "Fuentes de Ebro" and "Calot de Valls" and the yellow variety "Grano de Oro". Using them the researchers demonstrated that phenolic compounds in the onion prevent the development of bacteria such as Bacillus cereus, Staphylococcus aureus, Micrococcus luteus and Listeria monocytogenes, microorganisms typically associated with the deterioration of foods.

Previous studies indicate that flavonoids have beneficial effects for health due to their antioxidant, anti-inflammatory, cardioprotective, vasodilatory and anti-carcinogenic properties, making it of special interest in the prevention of chronic illnesses, such as cardiovascular illnesses, and some types of cancer.

A more stable component

The flavonoids of the onion are more stable than some of its other components, such as sulphur compounds. Traditionally it was indicated that these sulphuric compounds are good for the health, as they are responsible for the characteristic taste, aroma and lacrimogenic effects of the plant. These substances, which are very volatile and unstable, are released when the onion is damaged or cut.

The onion (Allium cepa) is one of the most cultivated and consumed vegetables on the planet (around 66 million tonnes in 2008, of which 1.1 million were produced in Spain, especially in Castilla-La Mancha), and one of the main ingredients of the Mediterranean diet.


Contact: SINC
FECYT - Spanish Foundation for Science and Technology

Related medicine news :

1. Koru Naturals Becomes the First U.S. Company to Import Molan Gold Standard Manuka Honey
2. InterHealth's UC-II in New Joint-Health Product from Nordic Naturals
3. Serendipity House Limited, the Leading Provider of Natural and Organic Products in Hong Kong, Renews Multi-year Relationship with Seventh Generation
4. Yoga Teacher Training Guide Launches on Natural Healers
5. Novel soy germ-based dietary supplement, SE5-OH containing natural S-Equol, examined for safety and influence on hormones in pre- and post-menopausal women
6. Organic Wholesale Club Brings Wholesale Club Concept to Large Organic and Natural E-commerce Site
7. New Natural Allergy Relief Available
8. Sino Veda Herbal Product Maker Goes Natural in Edmonton Research Park
9. Kay's Naturals Answers Obama's Call to Tackle Childhood Obesity
10. Official Alkaline Diet Website Announces New Expansion Plans to Offer Natural Health and Dieting News
11. New Exhibition Hall Devoted to Human Origins Opens at National Museum of Natural History
Post Your Comments:
Related Image:
The onion, a natural alternative to artificial preservatives
(Date:10/13/2017)... ... October 13, 2017 , ... Many families have long-term insurance that ... insurance companies have a waiver for care if the client has a cognitive impairment ... family pays for care, is often waived, so the benefits from their insurance start ...
(Date:10/13/2017)... ... , ... Talented host, actor Rob Lowe, is introducing a ... episode of "Success Files," which is an award-winning educational program broadcasted on PBS ... in-depth with passion and integrity. , Sciatica occurs when the sciatic nerve in ...
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent and San Francisco dentists, ... cutting-edge Oventus O2Vent technology. As many as 18 million Americans are estimated to ... breathing. Oral appliances can offer significant relief to about 75 percent of people ...
(Date:10/12/2017)... ... October 12, 2017 , ... Asante, a nationally recognized health ... expanded their existing home health joint venture through an agreement, effective October 1, ... joint venture home health company with Asante, delivering clinically integrated care, for the ...
(Date:10/12/2017)... ... 2017 , ... On Saturday, October 21, the Health & Wellness Center at ... raise money for the American Heart Association Heart Walk. Teams of up to 10 ... to keep their treadmills moving for 5 hours. Treadmills will start at 7:00 p.m. ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... Oct. 2, 2017 The Rebound mobile app is ... to reverse the tide of prescription drug addiction. The app ... medicine intake and stepping down their dosage in a safe, ... in December 2017; the first 100,000 people to sign up ... ...
(Date:9/27/2017)... MIAMI , Sept. 27, 2017  Commended for their ... recent notable awards. Ranked as number one in the South ... ninth time in Inc. 5000 yearly list, the national specialty ... CEO, Armando Bardisa will soon be honored by ... Set to receive his award ...
(Date:9/25/2017)... , Sept. 25, 2017  EpiVax, Inc., a ... design, and immune-engineering today announced the launch of ... development of personalized therapeutic cancer vaccines. EpiVax has ... exclusive access to enabling technologies to the new ... will lead EpiVax Oncology as Chief Executive Officer. ...
Breaking Medicine Technology: