Ultrasound-accelerated enzymatic synthesis of sugar esters in nonaqueous solvents

Xiao, Yihong; Wu, Qi; Cai, Ying; Lin, Xianfu

doi:10.1016/j.carres.2005.06.027

Cited by 83 publications

(40 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This increase might have been due to mechanical stress as well as micro-streaming induced by acoustic cavitations . A significant enhancement of the trans-esterification of glucose and divinyldicarboxylates by ultrasonication treatment was observed with higher yields than those observed in response to shaking for the same reaction time (Xiao et al, 2005). It is assumed that the effects of ultrasonication occur via increased mass transport owing to the effects of cavitations, which results in faster product dispersion from the enzymatic location (Xiao et al, 2005).…”

Section: Discussionmentioning

confidence: 97%

Induction of Resveratrol Biosynthesis in Grape Skins and Leaves by Ultrasonication Treatment

Hasan¹,

Baek²

2013

Korean Journal of Horticultural Science and Technology

View full text Add to dashboard Cite

Abstract. Grapes (Vitis vinifera) are one of the most important fruits worldwide and are eaten raw or after conversion to jelly, jam, juice and wine. Grape skins are a major source of resveratrol (3,5,4′-trihydroxystilbene), which has the ability to reduce blood sugar as well as anticancer, anti-inflammatory, and other beneficial cardiovascular effects. In this study, we investigated the increased accumulation of resveratrol in grape skin and leaves following ultrasonication treatment, which has been shown to induce resveratrol accumulation in several plants. Various ultrasonication treatment times and incubation periods were employed to identify the optimum conditions for the maximum accumulation of resveratrol. Treatment and further incubation led to increased resveratrol in both grape skins and leaves, with the highest increases of 7.7-fold and 1.9-fold occurring in response to 5 min ultrasonication treatment followed by 6 hour incubation and 15 min ultrasonication treatment followed by 3 hour incubation, respectively. The underlying mechanism for the increased amounts of resveratrol were studied by employing a semi-quantitative RT-PCR to monitor the expression levels of the resveratrol synthase (RS) gene in response to ultrasonication treatment. The RS gene increased the expression in response to ultrasonication treatment, suggesting that up-regulation of the RS gene by ultrasonication treatment triggers increased amounts of resveratrol. Taken together, these data indicate that this simple ultrasonication treatment of grapes can be an efficient post-harvest technology for increasing resveratrol in grape skins in addition to cleaning the fruits.

show abstract

Section: Discussionmentioning

confidence: 97%

Induction of Resveratrol Biosynthesis in Grape Skins and Leaves by Ultrasonication Treatment

Hasan¹,

Baek²

2013

Korean Journal of Horticultural Science and Technology

View full text Add to dashboard Cite

show abstract

“…However, UR decreased the times of the chemical reactions, while enzyme-catalyzed reactions were accelerated by UR [5]. Although enzymatic transglycosylation reactions have been accelerated by microwave radiation [6], to the best of our knowledge, there have been no published reports on the effects of UR on transglycosylation reaction using AA for AA-2G production.…”

Section: Introductionmentioning

confidence: 84%

“…This improvement could be due to acceleration of enzyme and substrate collisions, acceleration of substrate and product diffusion to and from the enzyme active site, and mild UR radiation-induced enzyme activation [15]. Previously, UR was found to increase reaction rates and yields of sugar ester biosynthesis, which were attributed to acceleration of the collision probability of enzyme and substrate [5].…”

Section: Discussionmentioning

confidence: 99%

Improvement of 2-O-α-D-Glucopyranosyl-L-Ascorbic Acid Biosynthesis Using Ultrasonic Radiation

Eibaid¹,

Miao²,

Bashari³

2015

Trop. J. Pharm Res

View full text Add to dashboard Cite

show abstract

“…In addition to microwave, another technique that has attracted the attention of scientists is the application of ultrasound to such bioconversions. Xiao et al 56 observed that the pretreatment to the enzymes under a suitable ultrasound power can improve their catalytic performance, promote non-aqueous enzymatic synthesis of sugar esters as well. Besides, the ultrasound did not change the regioselectivity of the enzymatic acylation.…”

Section: Synthesis Of Sucrose Esters In Organic Mediamentioning

confidence: 99%

Enzyme‐catalyzed regioselective synthesis of sucrose‐based esters

Shi

Lǐ

Chu

2011

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

Sucrose-based esters are nonionic biosurfactants, which can be synthesized from the enzyme-catalyzed esterification/transesterification of sucrose. The multi-hydroxyl groups of sucrose and the immiscibility of sucrose with the acyl donors are the main bottlenecks in obtaining highly regioselective sucrose-based esters. In this mini-review, the effects of reaction conditions such as biocatalysts, design of solvent systems used as reaction media, modification and denaturation of substrates, and coupling with external auxiliary physical fields such as microwave irradiation and ultrasonic waves on the yield of sucrose esters and regioselectivity of products are highlighted. The existing problems in the field of enzymatic synthesis of sucrose esters as well as its future perspectives were pointed out.

show abstract

Ultrasound-accelerated enzymatic synthesis of sugar esters in nonaqueous solvents

Cited by 83 publications

References 35 publications

Induction of Resveratrol Biosynthesis in Grape Skins and Leaves by Ultrasonication Treatment

Induction of Resveratrol Biosynthesis in Grape Skins and Leaves by Ultrasonication Treatment

Improvement of 2-O-α-D-Glucopyranosyl-L-Ascorbic Acid Biosynthesis Using Ultrasonic Radiation

Enzyme‐catalyzed regioselective synthesis of sucrose‐based esters

Contact Info

Product

Resources

About