Applications and opportunities for ultrasound assisted extraction in the food industry — A review

Vilkhu, Kamaljit; Mawson, Raymond; Simons, Lloyd; Bates, Darren

doi:10.1016/j.ifset.2007.04.014

Cited by 1,173 publications

(640 citation statements)

References 66 publications

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“…However, in both cases, the data is based on the total phenolic content measurements. To our knowledge, no study has been carried out to date, on the impact of highpower ultrasounds on the alteration of individual phenolic compounds during apple tissue treatment, except the studies dedicated to the ultrasound-assisted extraction of bioactive compounds in analytical methods (Vilkhu et al 2008;Abid et al 2014). …”

Section: Introductionmentioning

confidence: 99%

Effects of Ultrasound on Polyphenol Retention in Apples After the Application of Predrying Treatments in Liquid Medium

Mieszczakowska-Frąc

Dyki

Konopacka

2015

Food Bioprocess Technol

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The effect of sonication time and kind of liquid medium on polyphenol retention and microstructure changes during predrying treatment of apple tissue was investigated. The apple cubes from 'Idared' cultivar were submerged in water or sucrose solution and sonicated indirectly in beakers placed in a water bath fitted with ultrasound transducers (25 kHz, 0.1 W/cm 3 ) at 40°C. The treatment was conducted with and without ultrasound applied for 45 and 90 min. The content of individual polyphenols was monitored by a reversephase high-performance liquid chromatography (RP-HPLC) method. The dominant phenolic compounds in apple were procyanidins, accounting for 56 % of total polyphenols. While a significant effect of sonication on mass transfer intensification was observed when the samples were dehydrated in sucrose solution, almost no negative effects of ultrasound application were perceived on polyphenols concentration, except for dimers of catechin. When using ultrasound in water solution, an increase in polyphenol compound losses was noted. Furthermore, the ultrasound energy caused an apple tissue structure modification which additionally affected polyphenol retention during predrying treatment.

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Section: Introductionmentioning

confidence: 99%

Effects of Ultrasound on Polyphenol Retention in Apples After the Application of Predrying Treatments in Liquid Medium

Mieszczakowska-Frąc

Dyki

Konopacka

2015

Food Bioprocess Technol

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“…Ultrasound-assisted degradation (UAD) has been broadly applied to degrade biopolymers, such as chitosan, starch, pectin and dextran (Lorimer et al 1995;Czechowska-Biskupa et al 2005;Liu et al 2006;Kou and Wang 2010). The increasing of degradation efficiency by ultrasound is attributed to the propagation of ultrasound pressure waves, and resulting cavitation phenomenon (Vilkhu et al 2008). Moreover, some supplementary means for the ultrasound degradation process, such as combine the use of ultrasound and enzyme, or ultrasound under hydrogen peroxide and acid conditions, were used to accelerate the degradation of the polymers (Entezari and Pétrier 2004;Kou and Wang 2010).…”

Section: Introductionmentioning

confidence: 99%

Preparation of water-soluble melanin from squid ink using ultrasound-assisted degradation and its anti-oxidant activity

Guo

Chen

et al. 2013

J Food Sci Technol

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Water-soluble squid melanin fractions were firstly prepared using ultrasound-assistant degradation method under alkaline condition, which is optimized by response surface methodology. The processing melanin fractions were divided into different molecular weight (Mw) fractions by membrane separation (below 10 kDa, among 10-50 kDa and over 50 kDa). The AFM image and particle-size analysis showed monomer units of the melanin were destroyed, and huge polymers were degraded into smaller soluble particles after ultrasound. While, UV, IR and solid 13 C NMR spectra indicated that the basic structure of melanin fraction was still retained after ultrasound process. Further analysis showed soluble melanin fractions obtained in 0.5 and 1 M NaOH, with Mw above 10 kDa exhibited much higher in vitro antioxidant potency. The IC 50 of these fractions (IC 50 among 19-80 μg) on scavenging O 2¯i s more efficient than carnosine (IC 50 = 355 μg/ml.), a commercialized antioxidant. They (IC 50 mong 115-180 μg/ml) are as efficient as carnosine (IC 50 = 110 μg/ml) on scavenging OH. Our research has reported a novel method for preparation of water-soluble melanin fractions from squid ink, which could be a promising free radical scavenger from nature resource.Keywords Squid ink melanin . Water-soluble . Ultrasound . Structure, anti-oxidation Practical applicationWe developed a novel method using ultrasound processing to obtain water-soluble squid ink melanin under alkaline condition. Our results showed that soluble squid ink melanin fraction as a natural pigment, is a new free radical scavenger with a promising prospect. The excellent solubility can increase absorption and enhance utilization rate in vivo, providing a potential prospect for squid ink melanin products as a nature antioxidant.

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“…After 2 weeks under these conditions, the animals were randomly divided into six groups of six animals each (n ¼ 6) and then orally treated for 4 weeks as follows: group C (negative control) received distilled water (0.5 mL/100 g); groups HE 150, HE 300, and HE 600 received HE of S. chilensis at doses of 150, 300, and 600 mg/ kg, respectively; group QRT (quercetrin) received 10 mg/kg quercetrin; and group SIMV (simvastatin powder) received 4 mg/kg simvastatin (Sigma-Aldrich Õ , Sigma, St. Louis, MO) (positive control). All drugs were diluted with distilled water in established doses (Adeneye et al, 2010;Balzan et al, 2013) submitted to ultrasound bath (40 kHz) at 20 C by 30 min to facilitate solubility (Patel et al, 2008;Vilkhu et al, 2008;Wang & Weller, 2006) and administered by gavage in a volume of 0.5 mL/100 g body weight (Diehl et al, 2001;Trovato et al, 1996). During this period, the high cholesterol diet was continued until treatment day 30.…”

Section: Experimental Design and Sample Collectionmentioning

confidence: 99%

Hypolipidemic effects ofSolidago chilensishydroalcoholic extract and its major isolated constituent quercetrin in cholesterol-fed rats

Junior¹,

Piato²,

Conterato³

et al. 2015

Pharmaceutical Biology

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(2015) Hypolipidemic effects of Solidagochilensis hydroalcoholic extract and its major isolated constituent quercetrin in cholesterol-fed rats, Pharmaceutical Biology, 53:10, 1488-1495, DOI: 10.3109/13880209.2014 Objective: This study evaluates the hypolipidemic and antioxidant effects of hydroalcoholic extract (HE) and quercetrin from S. chilensis aerial parts in cholesterol-fed rats. Materials and methods: The HE was analyzed by high-performance liquid chromatography, followed by quercetrin isolation. Hypercholesterolemic rats (1% cholesterol and 0.5% cholic acid for 15 d) were treated with HE (150, 300, and 600 mg/kg p.o.; n ¼ 6), simvastatin (4 mg/kg p.o.; n ¼ 6), or quercetrin (10 mg/kg p.o.; n ¼ 6) once a day for 30 d. During this period, a highcholesterol diet was maintained until the 30th day of treatment.Results: Rats treated with HE (150, 300, and 600 mg/kg) and quercetrin showed decreased serum levels of total cholesterol (À19.9, À27.5, À31.0, and À39.4%), lipoprotein-cholesterol (À36.0, À37.5, À43.3, and À59.4%), and triacylglycerides (À15.6, À23.5, À29.8, and À27.2%) when compared with the control group similar to simvastatin. Moreover, treatment with HE and quercetrin decreased hepatic 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase activity (35.1% on average) and increased fecal cholesterol levels (38.2% on average). Discussion and conclusions: Our results suggest that hypolipidemic effects of HE are associated with it modulating the activity of HMG-CoA reductase and its interference in the reabsorption and/or excretion of intestinal lipids. Solidago chilensis and its main constituent, quercetrin, may thus be effective as cholesterol-lowering agents and in preventing atherosclerosis.

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Applications and opportunities for ultrasound assisted extraction in the food industry — A review

Cited by 1,173 publications

References 66 publications

Effects of Ultrasound on Polyphenol Retention in Apples After the Application of Predrying Treatments in Liquid Medium

Effects of Ultrasound on Polyphenol Retention in Apples After the Application of Predrying Treatments in Liquid Medium

Preparation of water-soluble melanin from squid ink using ultrasound-assisted degradation and its anti-oxidant activity

Hypolipidemic effects ofSolidago chilensishydroalcoholic extract and its major isolated constituent quercetrin in cholesterol-fed rats

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