Dietary glycerol monolaurate supplementation for the modification of functional properties of egg white protein

Abstract

BACKGROUND Understanding the interactions between feed additives and the functional properties of egg white protein (EWP) may offer novel insights into the effects of feed additives on laying hens and may provide an alternative for modification of the functional properties of EWP by using laying hens as bioreactors. Glycerol monolaurate (GML) is widely used in the food industry as an effective antibacterial emulsifier. In this work, the effects of three doses of dietary GML supplementation (150, 300, and 450 mg kg−1 hen) on the functional properties of EWP were investigated. RESULTS The hardness of EWP gels was significantly improved by 300 and 450 mg kg−1 GML supplementation. Foaming capacity (FC) and foaming stability (FS) were increased after GML treatment; 450 mg kg−1 GML supplementation showed the most significant improvements, with 44.82% in FC and 23.39% in FS. Stabilization of EWP‐oil emulsions was also improved, supported by a slowed creaming process and the formation of smaller oil droplets. The heat denaturation temperature and rheological properties were also modified by dietary GML supplementation, implying improved thermal stability. CONCLUSION Our study demonstrated that GML supplementation has the potential to modify the functional properties of EWP, broadening the application of GML and providing a new perspective for evaluation of the efficacy of feed additives. © 2019 Society of Chemical Industry

Glycerol Monolaurate Enhances Reproductive Performance, Egg Quality and Albumen Amino Acids Composition in Aged Hens with Gut Microbiota Alternation

“…Likewise, broilers fed diet containing GML show improvements on body weight gain, feed efficiency, immunological and nutritional status in Ross 308 broilers [14]. Our laboratory demonstrated that dietary GML could improve reproductive performance, egg quality and feed efficiency in Hy-Line Brown laying hens during 44-52 weeks of age [15,16].…”

“…Bacterial DNA were extracted from frozen cecal digesta using a QIAamp DNA Stool Mini Kit (QIAGEN, Venlo, The Netherlands) by following the manufacturer's protocol. 16S rRNA paired-end sequencing targeting the V3-V4 hypervariable region was performed in Illumina HiSeq 2500 platform and the gene sequence analysis referred to our previous work [15]. Greengenes database based on the RDP classifier (V2.2) was used on taxonomic classification.…”

“…Although the effect of dietary GML on reproductive performance, egg quality, serum biochemical indices and intestinal morphology in laying hens at 44-52 weeks of age were evaluated by our previous study [15]. However, this experimental period was too short to assess the overall impact of GML on the whole late laying period for hens.…”

Research Note: Effects of glycerol monolaurate supplementation on egg production, biochemical indices, and gut microbiota of broiler breeders at the late stage of production

“…Elevated apparent metabolic rate of crude protein and meat nutritional compounds (essential Fas, polyunsaturated FAs, protein, lysine, aspartate, glutamate, tyrosine, flavor AAs, and total AAs) of broilers were also observed in that study. Zhao et al. (2019a) reported that supplementation of GML can modify the functional properties of egg white protein by increasing the hardness and improving the thermal stability.…”

Preventive effect of Shuidouchi (short-term fermented soybean) on dextran sulfate sodium (DSS)-induced colitis in mice

“…Nearly 95% of Chinese suffer from intestinal diseases, which seriously affect their health and quality of life. Colitis is one of the most important intestinal diseases, which poses a considerable risk to human health [10].…”