Stability characteristics of O/W emulsions prepared using purified glycyrrhizin or a non-purified glycyrrhizin-rich extract from liquorice root (Glycyrrhiza glabra)

Taarji, Noamane; Bouhoute, Meryem; Melanie, Hakiki; Hafidi, Abdellatif; Kobayashi, Isao; Neves, Marcos A.; Tominaga, Ken-ichi; Isoda, Hiroko; Nakajima, Mitsutoshi

doi:10.1016/j.colsurfa.2020.126006

Cited by 6 publications

(4 citation statements)

References 30 publications

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“…creams, face masks, and make-up) [73]. Moreover, the excess of foam can be harmful to processes like high-pressure homogenisation [74], and the equipment can be damaged [75]. Despite the results of extracts being very close, RA shows higher foam formation and stability at higher pH.…”

Section: Foaming Propertiesmentioning

confidence: 99%

Evaluation of saponin-rich extracts as natural alternative emulsifiers: A comparative study with pure Quillaja Bark saponin

Schreiner

Colucci

Santamaria‐Echart

et al. 2021

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Foaming Propertiesmentioning

confidence: 99%

Evaluation of saponin-rich extracts as natural alternative emulsifiers: A comparative study with pure Quillaja Bark saponin

Schreiner

Colucci

Santamaria‐Echart

et al. 2021

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“… a Significance vs 0 c , 25 d , 50 e and 75% f extract (v/v) at 95% confidence interval ( p ≤ 0.05). Absent significance letters indicate no significant differences ( p ≤ 0.05). b Adapted from Taarji et al …”

Section: Resultsmentioning

confidence: 99%

Emulsifying Performance of Crude Surface-Active Extracts from Liquorice Root (Glycyrrhiza Glabra)

Taarji

Bouhoute

Chafai

et al. 2021

ACS Food Sci. Technol.

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The emulsifying performance of crude aqueous–ethanolic extracts from liquorice root (Glycyrrhiza glabra) (LREs) was investigated. Seventy five percent aqueous ethanol extract produced the most stable oil-in-water emulsions, with average volume mean droplet diameters of approximately 130 nm and monomodal size distributions. The extract contained 6.87% proteins, 7.99% saponins, and 6.72% polyphenols and reduced the interfacial tension from 25.3 to 12.0 mN m–1 at the soybean oil/water and soybean oil/extract (1%, w/w) interfaces, respectively. The emulsifying performance of LREs was not correlated, however, with their interfacial activity or surface-active composition. The water extract provided limited stability upon storage at 25 °C for 48 h, despite its important surface-activity and composition. This extract presented the highest electrical conductivity and the lowest ζ-potentials, indicating that electric screening of charges was occurring when it was used as an emulsifier. Our findings indicate that crude surface-active extracts can be used directly as emulsifiers, without further purification, provided that an accurate balance between emulsion stabilizing and destabilizing agents is achieved by extraction.

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“…The number distribution and the D [3, 2], known as the droplet Sauter diameter, were determined from the volume distribution. The parameter D [3, 2] was chosen since it is reported to be the most appropriate to be used with nanoemulsions; namely, it is suitable for narrow‐sized droplet distributions (Taarji et al, 2021). Moreover, considering its relationship with the specific surface area of the oil droplets, it is indicative of the needed amount of emulsifier to cover the droplet surface (Bai et al, 2019; Mcclements & Gumus, 2016).…”

Section: Methodsmentioning

confidence: 99%

Study of binary mixtures of Tribulus terrestris extract and Quillaja bark saponin as oil‐in‐water nanoemulsion emulsifiers

Schreiner,

Santamaria‐Echart,

Peres

et al. 2023

J Surfact & Detergents

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Several industrial fields use emulsifiers in their products, with the ones of natural origin gaining increasing relevance. Identifying and using diversified sources for their extraction is a pertinent topic regarding sustainability principles, biodiversity preservation, or cost rationalization. This is the case of Quillaja bark saponin (QS), for which saponin‐rich extracts, for example, Tribulus terrestris (TT), are being highlighted as viable alternatives, even though constraints like performance are still on the table. In this context, an experimental design using binary emulsifier mixtures of TT with pure QS was carried out by changing their composition (50–90%wt. TT), content (1.5–4.5%wt.), and high‐pressure homogenization conditions (5–15 cycles). The emulsions were characterized by zeta potential, morphology, droplet size, and stability (expressed as the number of days without creaming formation). Moreover, the cream index for 30 days was determined to indicate the destabilization extent. The zeta potential showed stable emulsions (values below −41 mV); even still, creaming formed for samples using a low emulsifier and high TT contents. The emulsions' mean droplet diameter (D [3, 2]) was between 78 and 921 nm, with smaller sizes agreeing with higher stability. The statistical analysis indicated an optimum composition range comprising an emulsifier content between 3.9 and 4.5%wt. and TT content between 50 and 56%wt. to reach stable products. Overall, TT can provide an effective solution when combined with QS, decreasing the dependence on Quillaja bark.

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Stability characteristics of O/W emulsions prepared using purified glycyrrhizin or a non-purified glycyrrhizin-rich extract from liquorice root (Glycyrrhiza glabra)

Cited by 6 publications

References 30 publications

Evaluation of saponin-rich extracts as natural alternative emulsifiers: A comparative study with pure Quillaja Bark saponin

Evaluation of saponin-rich extracts as natural alternative emulsifiers: A comparative study with pure Quillaja Bark saponin

Emulsifying Performance of Crude Surface-Active Extracts from Liquorice Root (Glycyrrhiza Glabra)

Study of binary mixtures of Tribulus terrestris extract and Quillaja bark saponin as oil‐in‐water nanoemulsion emulsifiers

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