Ultrasound-assisted extraction of total flavonoids from Inula helenium

Jin, Wang; Zhao, Yijie; Guo, Chunyan; Zhang, Shao-Meng; Zhang, Danshen; Bai, Xuemei

doi:10.4103/0973-1296.96581

Cited by 29 publications

(9 citation statements)

References 8 publications

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“…Interestingly, with longer extraction time, the amounts of proanthocyanidins and anthocyanins remained similar, while total flavonoids on average increased 36.8 % after extending extraction time from 30 minutes to 45 or 60 minutes (Table 2). Similarly, to our results, other sources have shown that higher total flavonoids concentrations were observed with longer extraction time (10 vs. 30 min) for Inula helenium 53 . Also, literature reports fluctuations (increase and decrease) in the flavonoid content as a function of time for aqueous ethanol extracts.…”

Section: Influence Of Extraction Parameters On Concentrations Of Flavsupporting

confidence: 77%

Influence of Acidity and Extraction Time on the Recovery of Flavonoids from Grape Skin Pomace Optimized by Response Surface Methodology

Putnik

Kovačević

Radojčin

et al. 2017

Chem.Biochem.Eng.Q.

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Grape pomace is recognized as an economical source for the recovery of a large number of biologically active compounds, such as polyphenols. Grape pomace extracts can be successfully used as raw material for functional foods production, since they are generally recognized as safe for the food industry. This study aimed to quantify the amounts of recovered flavonoids (total flavonoids, proanthocyanidins, anthocyanins, and flavonols) from grape skin pomace (Vitis vinifera L. cv. Merlot) under conventional extraction with different acidities (0.5 % -1 % HCl) and lengths of extraction time (30-60 minutes). The grand average values in this study were as follows: (i)

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Section: Influence Of Extraction Parameters On Concentrations Of Flavsupporting

confidence: 77%

Influence of Acidity and Extraction Time on the Recovery of Flavonoids from Grape Skin Pomace Optimized by Response Surface Methodology

Putnik

Kovačević

Radojčin

et al. 2017

Chem.Biochem.Eng.Q.

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“…The column was maintained at 30 °C and the flow rate was 0.4 mL/min. Measurements of the levels of the four secondary metabolites naringenin, quercetin, kaempferol and myricetin were determined based on commercial standards (Extra synthese), and the recovery rate was tested by internal standard method [33]–[34]. Each experiment was repeated 6 times.…”

Section: Methodsmentioning

confidence: 99%

Analysis of Flavonoids and the Flavonoid Structural Genes in Brown Fiber of Upland Cotton

et al. 2013

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BackgroudAs a result of changing consumer preferences, cotton (Gossypium Hirsutum L.) from varieties with naturally colored fibers is becoming increasingly sought after in the textile industry. The molecular mechanisms leading to colored fiber development are still largely unknown, although it is expected that the color is derived from flavanoids.Experimental DesignFirstly, four key genes of the flavonoid biosynthetic pathway in cotton (GhC4H, GhCHS, GhF3′H, and GhF3′5′H) were cloned and studied their expression profiles during the development of brown- and white cotton fibers by QRT-PCR. And then, the concentrations of four components of the flavonoid biosynthetic pathway, naringenin, quercetin, kaempferol and myricetin in brown- and white fibers were analyzed at different developmental stages by HPLC.ResultThe predicted proteins of the four flavonoid structural genes corresponding to these genes exhibit strong sequence similarity to their counterparts in various plant species. Transcript levels for all four genes were considerably higher in developing brown fibers than in white fibers from a near isogenic line (NIL). The contents of four flavonoids (naringenin, quercetin, kaempferol and myricetin) were significantly higher in brown than in white fibers and corresponding to the biosynthetic gene expression levels.ConclusionsFlavonoid structural gene expression and flavonoid metabolism are important in the development of pigmentation in brown cotton fibers.

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“…In addition, the roots are also listed in some European pharmacopoeias as a diuretic, diaphoretic, expectorant, and anthelmintic remedy [2]. Previous researches have shown evidence that I. helenium contains sesquiterpene lactones and flavonoids [3–7], while many studies have reported that a large amount of phenolic compounds present in the Compositae [8, 9]. However, no relevant work on total phenolic compounds (TPC) from I. helenium has been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound‐Assisted Extraction of Total Phenolic Compounds from Inula helenium

Wang

Zhao

Tian

et al. 2013

The Scientific World Journal

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Ultrasound-assisted extraction (UAE) of phenolic compounds from Inula helenium was studied. Effects of ethanol concentration, ultrasonic time, solid-liquid ratio, and number of extractions were investigated. An orthogonal array was constructed to optimize UAE process. The optimized extraction conditions were as follows: ethanol concentration, 30%; solid-liquid ratio, 1 : 20; number of extractions, 2 times; extraction time, 30 min. Under the optimal conditions, the yield of total phenolic compounds and chlorogenic acid was 6.13 ± 0.58 and 1.32 ± 0.17 mg/g, respectively. The results showed that high amounts of phenolic compounds can be extracted from I. helenium by ultrasound-assisted extraction technology.

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Ultrasound-assisted extraction of total flavonoids from Inula helenium

Cited by 29 publications

References 8 publications

Influence of Acidity and Extraction Time on the Recovery of Flavonoids from Grape Skin Pomace Optimized by Response Surface Methodology

Influence of Acidity and Extraction Time on the Recovery of Flavonoids from Grape Skin Pomace Optimized by Response Surface Methodology

Analysis of Flavonoids and the Flavonoid Structural Genes in Brown Fiber of Upland Cotton

Ultrasound‐Assisted Extraction of Total Phenolic Compounds from Inula helenium

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