Anti-Obesity Effect of Combining White Kidney Bean Extract, Propolis Ethanolic Extract and CrPi3 on Sprague-Dawley Rats Fed a High-Fat Diet

Obesity has been associated with the occurrence and prevalence of various chronic metabolic diseases. The management of obesity has evolved to focus not only on reducing weight, but also on preventing obesity-related complications. Studies have shown that bioactive components in natural products like white kidney bean extract (WKBE), propolis ethanolic extract (PEE), and chromium picolinate (CrPi3) showed anti-obesity properties. However, no studies have examined the outcomes of combining any of these nutraceutical supplements. We compared the effects of HFD supplemented with WKBE, WKBE+PEE, or WKBE+PEE+CrPi3 against control and obese groups using Sprague-Dawley rats fed a 45% high-fat diet as an in vivo model. Nutritional parameters, biochemical parameters, and biomarkers of cardiovascular disease, liver function, kidney function, and gut health were among the comparable effects. Our findings showed that combining the three nutraceutical supplements had a synergetic effect on reducing weight gain, food utilization rate, abdominal fat, serum lipids, arterial and hepatic lipids, risk of cardiovascular disease, and blood glucose level, in addition to improving renal function and gut microbiota. We attributed these effects to the α-amylase inhibitor action of WKBE, flavonoids, and polyphenol content of PEE, which were potentiated with CrPi3 resulting in a further reduction or normalization of certain parameters.

GlycoLite™ and helps to reduce body weight: evaluation of a health claim pursuant to Article 13(5) of Regulation (EC) No 1924/2006

Following an application from analyze & realize GmbH submitted for authorisation of a health claim pursuant to Article 13(5) of Regulation (EC) No 1924/2006 via the Competent Authority of Ireland, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver an opinion on the scientific substantiation of a health claim related to GlycoLite™. The Panel considers that the food, an aqueous extract from white kidney bean (Phaseolus vulgaris L.) standardised by its in vitro α‐amylase inhibitory activity (GlycoLite™) which is the subject of the health claim, is sufficiently characterised. The claimed effect proposed by the applicant is ‘helps to reduce body weight’. The proposed target population is ‘overweight people from the age of 18 years who want to lose or manage their weight’. The Panel considers that a reduction in body weight is a beneficial physiological effect for overweight individuals. Two human intervention studies, carried out in the same centres and by the same research group, showed an effect of 3 g of GlycoLite™ on body weight when consumed daily for 12 weeks in the context of an energy restricted diet. The results have not been replicated in a different setting. One study of short duration and methodological limitations showed an effect of GlycoLite™ on body weight when eating ad libitum. No evidence for a plausible mechanism by which GlycoLite™ could exert a reduction in body weight in vivo in humans has been provided. The Panel concludes that the evidence provided is insufficient to establish a cause and effect relationship between the consumption of an aqueous extract from white kidney bean (P. vulgaris L.) standardised by its in vitro α‐amylase inhibitory activity (GlycoLite™) and a reduction of body weight either under energy restriction or when eating ad libitum.