Wednesday, October 11, 2006 by: Ben Kage
(NewsTarget) Researchers at the University of Extremadura in Spain 
have found that the essential oils sage and rosemary could slow 
oxidative spoilage of meat better than synthetic antioxidants 
butylhydroxyanisole (BHA) and butylhydroxytoluene (BHT). 
"The results of my research support the idea that new food 
ingredients from plant kingdom are of interest for the meat 
industry," lead author Mario Estvez. "Using "functional ingredients" 
such as those containing flavonoids are excellent options to enhance 
the nutritional and technological properties of a wide range of 
foods." 
In the study, the researchers studied three pates, one with sage and 
rosemary oils, one with BHA and BHT, and one with no antioxidants, 
after they had been stored at 39 degrees Fahrenheit for 90 days. 
After 30 days, the scientists analyzed the levels of polyunsaturated 
fatty acids (PUFA), thibarbituric acid reactive substances (TBARS), 
and lipid-derived volatiles in the pates. The essential oil pate 
also showed a significantly reduced loss of PUFA levels compared to 
the synthetically preserved and control pates, and the essential 
oils also performed better in the inhibition of oxidative 
deterioration. No difference was observed after 90 days. 
"Results from the present study agree with those obtained 
(previously) , denoting even the possibility of replacing synthetic 
antioxidants such as BHT with natural extracts with antioxidant 
activity obtained from plants," wrote the authors in the January 
issue of LWT - Food Science and Technology (Lebensmittel-
Wissenschaft und -Technologie) . "Furthermore, the addition of plant 
essential oils greatly influences the aromatic profile of the 
products in which they are added since some volatile components of 
these essential oils are terpenes which might contribute to add 
specific aromatic notes." 
While the study results suggest that natural alternatives to 
synthetic preservatives are viable, Estvez said some obstacles still 
remain. 
"Regardless of the costs, the main challenges of using these 
substances on meat products are related to consumer's 
acceptability, " he said. "It is essential to carry out experimental 
works to prove the effectiveness of these substances is every single 
product because their activity as antioxidants depends on a large 
number of factors, including the characteristics of the food." 
The study comes at a time when plant-based alternatives to chemical 
preservatives are increasing in popularity, even to the point that 
the synthetic antioxidant market is in decline while the natural 
antioxidant market is growing, according to a 2003 report by Frost 
and Sullivan. 
Mike Adams, consumer health advocate and author of "Grocery 
Warning," explained that turning to all-natural preservatives was 
more than a just a good idea. 
"Replacing the toxic chemical additives currently used to preserve 
meat products with natural, plant-derived oils would help protect 
the population from cancer," he said. "The chemical additives 
currently being used to preserve common meat products are extremely 
toxic and known to aggressively promote cancer."