Effect of drying methods on the phenolic constituents of meadowsweet (Filipendula ulmaria) and willow (Salix alba)

Harbourne, Niamh; Marete, Eunice; Jacquier, Jean-Christophe; O’Riordan, Dolores

doi:10.1016/j.lwt.2009.05.005

Cited by 117 publications

(106 citation statements)

References 19 publications

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“…The Folin-Ciocalteu method was used for determination of total phenolic content (TPC) as described by Harbourne et al [11] with slight modifications. Accurately, 0.1 mL of sample or standard was mixed with 0.5 mL of Folin-Ciocalteu reagent.…”

Section: Estimation Of Total Phenolic Content (Tpc)mentioning

confidence: 99%

Total Phenolic and Flavonoid Content and Antioxidant Activities of Ten Malaysian Wild Mushrooms

Azieana¹,

Zainon²,

Abdullah³

et al. 2017

OALib

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Mushrooms have been studied and found to accumulate a variety of secondary metabolites with antioxidant activities such as phenolic compounds. Besides phenolics, other bioactive components such as flavanoids from mushrooms are also generally associated with antioxidant activities. Previous studies have reported the association of mushrooms with their antioxidant potentials. However, very few studies are related to unexplored Malaysian wild mushrooms as a new potential source of antioxidant for which to best of our knowledge, no records are available. In this study, ten Malaysian wild mushrooms were collected from the forests around Selangor and Sabah and their potential antioxidant activity were evaluated. The total phenolic content and total flavonoid content were quantified. Antioxidant activities of the mushroom extracts were analyzed by Ferric Reducing Antioxidant Power (FRAP) and 2,2-diphenylpicrylhydrazyl (DPPH) assays for their iron-reducing capacity and free-radical scavenging capacity. The total phenolic content of all ten mushrooms ranged from 0.015 -0.075 mg GAE/g dried extract and the total flavonoid content ranged from 0.025 -0.131 mg QE/g dried extract. The FRAP values lies between 0.859 -2.929 µM TE/g dried extract and the percentage of inhibition observed from DPPH assay ranged from 2% -57% respectively. There is a positive correlation between total phenolic content and antioxidant activities of these mushroom extracts.

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Section: Estimation Of Total Phenolic Content (Tpc)mentioning

confidence: 99%

Total Phenolic and Flavonoid Content and Antioxidant Activities of Ten Malaysian Wild Mushrooms

Azieana¹,

Zainon²,

Abdullah³

et al. 2017

OALib

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“…However, as determined, in hot air drying the loss of phenolic compounds and antioxidant activity reached up to 60% compared to freeze drying. The evaluation of other drying methods that remove moisture content at low temperatures with the use of irradiation or vacuum stands a challenging prospective (Harbourne et al, 2009;Orphanides et al, 2013). In recent years, microwave drying has been widely used as an alternative drying method for a wide variety of herbs and spices, and its effect on the quality of the dried product has been evaluated.…”

Section: Introductionmentioning

confidence: 99%

Effect of drying methods on the chemical composition and colour of peppermint (Mentha × piperita L.) leaves

Rubinskienė

Viškelis

Dambrauskienė

et al. 2015

Zemdirbyste-Agriculture

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The study was done with the two peppermint (Mentha × piperita L.) cultivars -'Krasnodarskaja' and 'Peppermint', whose leaves were dried using different methods. Investigation of fresh and dried herbs was carried out according to the biochemistry and technology methods. Essential oil was extracted using the hydro distillation method, the amount of chlorophyll a and b was measured spectrophotometrically according to the Vernon method. The highest content of essential oil (0.77%) and chlorophyll (1.69%) was found in the cv. 'Peppermint'. Chlorophyll a to b ratio was different in the fresh peppermint leaves: in the cv. 'Peppermint' it was 1.35 and in the cv. 'Krasnodarskaja' -1.44. Peppermint leaves were dried using active ventilation, convection, infrared, vacuum, microwave, and sublimation methods. The quality of dried herbs depended on the properties of plants and drying techniques. The highest content of essential oil (0.64-0.68% of dry mass) was found in the variously dried peppermint leaves of the cv. 'Krasnodarskaja'. The lowest content of essential oil (0.08% and 0.065% of dry mass) was determined in microwave dried herbs. The highest content of chlorophyll was found in the lyophilized peppermint leaves (715.0 mg 100 g -1 of dry mass) of the cv. 'Peppermint'. Regardless of the drying method, significant differences between the ratio of chlorophyll a to b were observed in the dried herbs of the cv. 'Krasnodarskaja'. The fresh and dried peppermint samples of the cv. 'Peppermint' had the lowest brightness L* value (from 22.61 to 35.24) and the lowest yellowness b* values (from 9.35 to 17.00). The biggest changes in greenness a* value were in microwave dried peppermint leaves.

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“…The available studies in literature described phenolic composition in C. sativa leaves (Calliste et al, 2001) and heartwood (Sanz et al, 2010), but not in its flowers. The phenolic composition of F. ulmaria flowers was studied, but with plant material from other European countries, i.e not growing under Mediterranean particular climatic and soil conditions Shilova et al, 2006;Pemp et al, 2007;Fecka, 2009;Harbourne et al, 2009;Krasnov et al, 2009). These flowers revealed the presence of a number of polyphenolic constituents including salicylates (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…spiraein, salicylic acid and methyl salicylate), flavonols (e.g. spiraeoside, hyperoside, rutin, kaempferol 4′-O-glucosides, quercetin-4′-O-β-D-galactopyranoside and quercetin-3-O-β-glucopyranoside) and ellagitannins (tellimagrandins I and II, and rugosin D) Shilova et al, 2006;Pemp et al, 2007;Fecka, 2009;Harbourne et al, 2009;Krasnov et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

Characterization of phenolic compounds in wild medicinal flowers from Portugal by HPLC–DAD–ESI/MS and evaluation of antifungal properties

Barros

Alves

Dueñas

et al. 2013

Industrial Crops and Products

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In the present work, the phenolic compounds of Castanea sativa, Filipendula ulmaria and Rosa micrantha flowers from Northeastern Portugal were characterized by HPLC-DAD-ESI/MS. Furthermore, it was performed a screening of their antifungal potential against Candida species (C. albicans, C. glabrata, C. parapsilosis and C. tropicalis).C. sativa sample gave the highest amount of phenolic compounds (18973 ± 40 µg/g, fw)and hydrolysable tannins (14873 ± 110 µg/g). The highest amounts of phenolic acids (569 ± 20 µg/g) and flavonoids (6090 ± 253 µg/g) were obtained in F. ulmaria and R. micrantha samples, respectively. Hydrolysable tannins (e.g. tri and digalloyl HHDP glucose) were the main group of phenolic compounds in C. sativa and F. ulmaria samples, while flavonoids (e.g. (+)-catechin and procyanidin dimers and trimers) were the most abundant group in R. micrantha. Thus, the stronger effect showed by this latter against all the Candida species (MIC ≤ 0.155 mg/mL) and, particularly its fungicide effects in C. glabrata, might be related to the mentioned flavonoids that were inexistence in the other samples.

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Effect of drying methods on the phenolic constituents of meadowsweet (Filipendula ulmaria) and willow (Salix alba)

Cited by 117 publications

References 19 publications

Total Phenolic and Flavonoid Content and Antioxidant Activities of Ten Malaysian Wild Mushrooms

Total Phenolic and Flavonoid Content and Antioxidant Activities of Ten Malaysian Wild Mushrooms

Effect of drying methods on the chemical composition and colour of peppermint (Mentha × piperita L.) leaves

Characterization of phenolic compounds in wild medicinal flowers from Portugal by HPLC–DAD–ESI/MS and evaluation of antifungal properties

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