Peanut skins may improve nutrition and flavour of peanut butter

Peanut skins may improve nutrition and flavour of peanut butter

Adding peanut skins to peanut butter could help to improve nutritional value while maintaining the flavour, say researchers.

The study – published in the Journal of Food Science – backs the use of ‘low-value’ peanut skin residues to improve the nutritional value and shelf life of the popular spread by increasing levels of phenolic compounds.

Led by Timothy Sanders from North Carolina State University, USA, the researchers evaluated the nutritional, antioxidant, and flavour properties of peanut paste and peanut butter enhanced with peanut skins, finding that inclusion of the processing by-product into peanut butter formulations can help to improve nutritional values and shelf life – adding that there may be potential to utilise peanut skins to improve nutritional quality in other products.

“The use of this material to improve antioxidant capacity and shelf-life of foods can add value to the material and improve the nutritional value of foods,” write the researchers. “The improved nutritional qualities and unchanged flavour profile occurring with low levels of peanuts skins in peanut paste and peanut butter suggest potential application of this technology in various food industries.”

Study details

Peanut skins are a low-value by-products from peanut processing. However they contain naturally high levels of antioxidant phenolic compounds. As a result Sanders and his team evaluated the effects of adding peanut skins to peanut pastes and peanut butter.

The team added peanut the skins in concentrations of 0.5 to 20.0%.

Sensory analysis with a panel of tasters indicated that the addition of 1% peanut skins did not change intensity of flavour or sensory profiles of either peanut paste or peanut butter, whilst adding 5% skins or above resulted in significant differences in sensory attributes.

Therefore, the team concluded that the improved nutritional qualities and unchanged flavour profiles occurring with low levels of around 1% peanuts skins could provide benefits in terms of nutritional value and shelf life extension in various food industry applications.

Source: Journal of Food Science
Published online ahead of print, doi: 10.1111/j.1750-3841.2012.02953.x
“Flavor and Antioxidant Capacity of Peanut Paste and Peanut Butter Supplemented with Peanut Skins”
Authors: Chellani S. Hathorn, Timothy H. Sanders

Related News

UK peanut butter volume sales rose 17% between 2010 and 2012 to 14m kg.

Peanut butter ‘the rising star’ in UK sweet spreads market – Mintel

Introducing peanuts into an infant diet did not seem to impact on the child's growth. (©

Eating peanuts during infancy nutritionally safe for kids: Study

The World Health Organization (WHO) states that cardiovascular disease (CVD) causes more than half of all deaths across the European Region.(©

Butter may not be as bad for the heart as previously thought: Review

One of the products involved in the recall. This example from Chattanooga Bakery Inc.

Action needed to stop contamination as peanut butter recall expands

Skippy on the block? Unilever explores options for peanut butter brand

Skippy on the block? Unilever explores options for peanut butter brand

Peanut meal could provide a source of novel umami flavour compounds and enhancers, say the researchers.

Peanut protein may provide novel umami flavour, suggest researchers

Submit a comment

Your comment has been saved

Post a comment

Please note that any information that you supply is protected by our Privacy and Cookie Policy. Access to all documents and request for further information are available to all users at no costs, In order to provide you with this free service, William Reed Business Media SAS does share your information with companies that have content on this site. When you access a document or request further information from this site, your information maybe shared with the owners of that document or information.