Comparison of microwave, ultrasonic and conventional techniques for extraction of bioactive compounds from olive leaves (Olea europaea L.)

Rosa, Gabriela Silveira da; Vanga, Sai Kranthi; Gariépy, Yvan; Raghavan, Vijaya

doi:10.1016/j.ifset.2019.102234

Cited by 113 publications

(110 citation statements)

References 41 publications

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“…This may be mainly due to the thermal effects of microwave. The increase in MT might have caused cell ruptures causing extraction of terpenoids in the sample and increase in detection (Khajeh, Moghaddam, & Sanchooli, 2010; da Rosa, Vanga, Gariepy, & Raghavan, 2019). These findings were also ascertained by ANOVA analysis (Table 2).…”

Section: Resultsmentioning

confidence: 99%

“…This may be due to the reason that sonication leads to disruption of cell walls, which further contributes to the release of plant compound from the cell (Bhat et al., 2011). Another reason may be due to the MT which causes cell ruptures leading to extraction of protein in the sample and increase in detection (Khajeh et al, 2010; da Rosa et al, 2019). Analysis of the amino acid composition of raw, conventional, and microwave‐treated BGJ is shown in Table 7.…”

Section: Resultsmentioning

confidence: 99%

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Effects of microwave combined with ultrasound treatment on the pasteurization and nutritional properties of bottle gourd (Lagenaria siceraria) juice

Das

Chakraborty

et al. 2020

J. Food Process. Preserv.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effects of microwave combined with ultrasound treatment on the pasteurization and nutritional properties of bottle gourd (Lagenaria siceraria) juice

Das

Chakraborty

et al. 2020

J. Food Process. Preserv.

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show abstract

“…The highest phenolic content was found with HAE, followed by UAE then MAE. In another similar study, da Rosa et al [ 25 ] compared MAE, UAE, and maceration and reported that MAE is more efficient in yield with short extraction time, followed by UAE and maceration. Additionally, regarding in vitro antioxidant activity: ferric reducing antioxidant power was found highest with UAE in which water and methanol are used as a solvent.…”

Section: Extraction Of Ppsmentioning

confidence: 99%

Curcumin, Quercetin, Catechins and Metabolic Diseases: The Role of Gut Microbiota

et al. 2021

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Polyphenols (PPs) are the naturally occurring bioactive components in fruits and vegetables, and they are the most abundant antioxidant in the human diet. Studies are suggesting that ingestion of PPs might be helpful to ameliorate metabolic syndromes that may contribute in the prevention of several chronic disorders like diabetes, obesity, hypertension, and colon cancer. PPs have structural diversity which impacts their bioavailability as they accumulate in the large intestine and are extensively metabolized through gut microbiota (GM). Intestinal microbiota transforms PPs into their metabolites to make them bioactive. Interestingly, not only GM act on PPs to metabolize them but PPs also modulate the composition of GM. Thus, change in GM from pathogenic to beneficial ones may be helpful to ameliorate gut health and associated diseases. However, to overcome the low bioavailability of PPs, various approaches have been developed to improve their solubility and transportation through the gut. In this review, we present evidence supporting the structural changes that occur after metabolic reactions in PPs (curcumin, quercetin, and catechins) and their effect on GM composition that leads to improving overall gut health and helping to ameliorate metabolic disorders.

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“…The most commonly used techniques involve conventional solid-liquid extraction and ultrasonic extraction [ 41 ]. Recently, a number of non-conventional technologies have been proposed for the extraction of oleuropein [ 44 ], including separation by membrane, infrared-assisted methods, accelerated solvent extraction, extraction with supercritical fluids [ 45 ], acid hydrolysis by sulfuric acid and microchannel devices [ 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 ].…”

Section: Extraction Of Phenolic Alcohols and Secoiridoidsmentioning

confidence: 99%

Potential Uses of Olive Oil Secoiridoids for the Prevention and Treatment of Cancer: A Narrative Review of Preclinical Studies

Emma

Augello

Stefano

et al. 2021

IJMS

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The Mediterranean diet (MD) is a combination of foods mainly rich in antioxidants and anti-inflammatory nutrients that have been shown to have many health-enhancing effects. Extra-virgin olive oil (EVOO) is an important component of the MD. The importance of EVOO can be attributed to phenolic compounds, represented by phenolic alcohols, hydroxytyrosol, and tyrosol, and to secoiridoids, which include oleocanthal, oleacein, oleuropein, and ligstroside (along with the aglycone and glycosidic derivatives of the latter two). Each secoiridoid has been studied and characterized, and their effects on human health have been documented by several studies. Secoiridoids have antioxidant, anti-inflammatory, and anti-proliferative properties and, therefore, exhibit anti-cancer activity. This review summarizes the most recent findings regarding the pharmacological properties, molecular targets, and action mechanisms of secoiridoids, focusing attention on their preventive and anti-cancer activities. It provides a critical analysis of preclinical, in vitro and in vivo, studies of these natural bioactive compounds used as agents against various human cancers. The prospects for their possible use in human cancer prevention and treatment is also discussed.

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Comparison of microwave, ultrasonic and conventional techniques for extraction of bioactive compounds from olive leaves (Olea europaea L.)

Cited by 113 publications

References 41 publications

Effects of microwave combined with ultrasound treatment on the pasteurization and nutritional properties of bottle gourd (Lagenaria siceraria) juice

Effects of microwave combined with ultrasound treatment on the pasteurization and nutritional properties of bottle gourd (Lagenaria siceraria) juice

Curcumin, Quercetin, Catechins and Metabolic Diseases: The Role of Gut Microbiota

Potential Uses of Olive Oil Secoiridoids for the Prevention and Treatment of Cancer: A Narrative Review of Preclinical Studies

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