Application of a Novel Instantized Glycerol Monooleate Ingredient in a Protein-Stabilized Oil-In-Water Emulsion

Abstract

Glycerol monooleate (GMO), casein and whey proteins are surfactants that can stabilize emulsion systems. This study investigates the impact of instantized GMO powders on creaming stability and oxidative stability in protein-stabilized emulsions. Model emulsions with bulk GMO, two instantized GMO powders, and two controls (without GMO) were produced by microfluidization. The droplet size, ζ-potential, viscosity, and creaming index of the emulsions were measured, while oxidative stability was evaluated by analysis of volatile compounds during storage (28 days, 45 °C) using gas chromatography mass spectrometry. Emulsions with GMO produced smaller average droplet sizes (180.0 nm) with a narrower distribution (polydispersity index of 0.161) compared to the controls (197.6 nm, 0.194). The emulsion stability of instantized emulsions was as good as bulk GMO, which were both better than controls. Based on the relative abundance of 3-octen-2-one, 2,4-heptadienal isomer 2, and 3,5-octadien-2-one isomer 1, the oxidative stability of the instantized emulsions was not significantly different from controls; however, bulk GMO emulsion showed significantly lower stability than controls. Instantized GMO powders can successfully produce physically stable protein-stabilized emulsions with good oxidative stability in a convenient powdered format.

Mixing Oil-Based Microencapsulation of Garlic Essential Oil: Impact of Incorporating Three Commercial Vegetable Oils on the Stability of Emulsions

“…Prior to analysis, GEO and GEO–vegetable oil (GEO-VO) mixtures (GEO:VO = 1:4) were placed in a 15 mL sample vial for solid-phase microextraction. The headspace solid-phase microextraction was performed to obtain the volatile compounds, referring to Lio et al [ 18 ] and modified slightly. The extraction head was aged at 250 °C for 22 min, and inserted into the top space part of the sample vial.…”

Emerging Plasticizers in South China House Dust and Hand Wipes: Calling for Potential Concern?

“…In addition to being used as an additive in commercial products, 28−30 GMO is also used as a processing aid in the production and stabilization of emulsions and foams in foods. 31,32 The long use history and wide range of applications may result in extremely high levels of GMO in the indoor environment. Both GMO and MO have been detected in natural products, while some other oleate-based chemicals (e.g., BO) can be synthesized from naturally occurring fatty acids.…”

“…43,73 In addition, selected chemicals such as GMO have been reported with direct applications as additives in the food industry. 74 This may greatly enhance human exposure, while the potential health risks have not been well explored. Although dermal exposure to semivolatile or volatile organic compounds has received relatively less attention, previous studies have reported that dermal contact may contribute significantly to the total phthalate exposure.…”

“…GMO exhibited the highest concentrations among target plasticizers, accounting for 58.4% of the total concentrations. In addition to being used as an additive in commercial products, − GMO is also used as a processing aid in the production and stabilization of emulsions and foams in foods. , The long use history and wide range of applications may result in extremely high levels of GMO in the indoor environment. Both GMO and MO have been detected in natural products, while some other oleate-based chemicals (e.g., BO) can be synthesized from naturally occurring fatty acids. − The natural origins and wide applications may result in broad occurrences of oleate-based plasticizers (Table S1) in the home environment (detection frequency = 65–100%).…”

“…Plasticizers may be widely employed in the manufacturing of food packaging products. Contact with food may result in frequent dietary intake of these chemicals. , This has been demonstrated for phthalates and other chemicals. , The detection of selected citrates (e.g., ATBC, TBC, and TEC) in food may also result from direct contact with food packaging materials. , In addition, selected chemicals such as GMO have been reported with direct applications as additives in the food industry . This may greatly enhance human exposure, while the potential health risks have not been well explored.…”