Total Phenolics, Flavonoids, and Antioxidant Activity of Sage (Salvia officinalis L.) Plants as Affected by Different Drying Methods

Sellami, Ibtissem Hamrouni; Rahali, Fatma Zohra; Rebey, Iness Bettaieb; Bourgou, Soumaya; Limam, Férid; Marzouk, Brahim

doi:10.1007/s11947-012-0877-7

Cited by 226 publications

(113 citation statements)

References 48 publications

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“…Even the drying methods of plants used for preparation of extracts could be responsible for the content of phenolics and flavonoids, as well as for the antioxidant activity of extracts and also their effects are dose dependent [37].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Thymus vulgaris Extract on Hippocampal Injury Induced by Transient Global Cerebral Ischemia and Reperfusion in Rat

Setorki

Mirzapoor

2017

Zahedan J Res Med Sci

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Background: A Brief interruption of blood supply to the brain can cause significant changes in the function of central nervous system. Patients usually show cognitive, emotional and electrophysiological changes during recovery from stroke. Preliminary pharmacokinetic studies have shown that Thymus vulgaris is useful in the treatment of seizures, respiratory diseases, smooth muscular spasm and bloating.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Thymus vulgaris Extract on Hippocampal Injury Induced by Transient Global Cerebral Ischemia and Reperfusion in Rat

Setorki

Mirzapoor

2017

Zahedan J Res Med Sci

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“…These results confirm the findings of (Arslan and Ö zcan 2010;Igual et al 2012) who found a better TPC retention in fruits and vegetables using MD compared with OD method; also Chan et al (2009), reported that oven, sun-drying and microwaves, caused significant decrease in the TPC in ginger leaves. Nevertheless, different studies have shown that drying processes may result in lower or higher levels of TPC depending on the type of phenolic compound present in the plant material and their location in the cell (Arslan and Ö zcan 2010;Hamrouni-Sellami et al 2013;Roshanak et al 2016;Verma et al 2015). For instance: sage plants dried in a microwave oven (800 W) showed an increase of 4.2-fold in TPC after drying (Hamrouni-Sellami et al 2013) while Zheng et al (2015) reported a significant decrease in TPC during the drying of loquat flower by using freeze drying, microwave, vacuum and hot-air drying.…”

Section: Effect Of Drying On Phenolic Compound Contents (Tpc)mentioning

confidence: 99%

“…For instance: sage plants dried in a microwave oven (800 W) showed an increase of 4.2-fold in TPC after drying (Hamrouni-Sellami et al 2013) while Zheng et al (2015) reported a significant decrease in TPC during the drying of loquat flower by using freeze drying, microwave, vacuum and hot-air drying. The higher content phenolic compounds after MD, may be attributed to disruption in the plant tissue by microwave causing more release of the phenolic compounds (Hamrouni-Sellami et al 2013).…”

Section: Effect Of Drying On Phenolic Compound Contents (Tpc)mentioning

confidence: 99%

“…Since the antioxidant activity of plant extracts cannot be evaluated using only one method due to the complex composition of the phytochemical and oxidative processes (Hamrouni-Sellami et al 2013), three different methods were used in this study: the DPPH radical scavenging assay, the ABTS radical cation decolorization assay and the ferric-reducing antioxidant potential (FRAP). The antioxidant activity values of the husk material extracts in TE using the DPPH were 858 ± 31.3 lmol TE/g dry wt for fresh husk, 594.9 ± 19.2 after OD and 630.5 ± 6.4 after MD, for ABTS were 1850.4 ± 89.3, 743.8 ± 23.4 after OD and 1226.6 ± 51.5 after MD and for FRAP were 493.7 ± 10.9, 372.4 ± 6.4 after OD and 419 ± 13.8 after MD.…”

Section: Effect Of Drying On Antioxidant Activitymentioning

confidence: 99%

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Effect of microwave drying and oven drying on the water activity, color, phenolic compounds content and antioxidant activity of coconut husk (Cocos nucifera L.)

et al. 2016

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The coconut (Cocos nucifera L.) husk is basically composed by fiber and pith material and remained under-utilized. This is an important source of phenolic compounds that could be used as functional ingredients. The aim of this study was to determine the effect of: ovendrying (OD) and microwave drying (MD), on the water activity, color, phenolic compound content and antioxidant activity of coconut husk. The OD was performed at 60°C for 12 h and MD was performed at 900 W for 10 min. The total phenolic content (TPC) in fresh coconut husk was 64.2 mg GAE/g dry wt and significant higher than observed after OD and MD of 35.8 and 45.5 mg GAE/ g dry wt, respectively. Ten phenols were identified in fresh and dehydrated coconut husks. The husk MD showed an increase in the content of gallic, 4-hydroxybenzoic, ferulic and syringic acids and epicatechin compared with the fresh; while coconut husk OD and MD, showed a decrease in the content of vanillic acid, vanillin, catequin and kaempferol. The antioxidant activity decreased after both OD and MD. However, MD resulted in a better antioxidant activity in husk than OD. MD of husk resulted into better retention of preserved color, TPC and TFC than OD.

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“…Drying conditions also had the impact on total phenolic content and antioxidant activity of roselle (Hibiscus sabdariffa L.) (Daniel et al 2012). Microwave drying was shown to retain phenolic content and was able to enhance antioxidant activity of methanol extact of Salvia officinails (Hamrouni-Sellami et al 2012).…”

Section: Antioxidative Activitiesmentioning

confidence: 99%

Antioxidant activities of lead (Leucaena leucocephala) seed as affected by extraction solvent, prior dechlorophyllisation and drying methods

et al. 2012

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Extracts of brown lead (Leucaena leucocephala) seed prepared using different extraction solvents were determined for antioxidative activities using different assays. The highest yield (3.4-4.0%) was obtained when water was used as an extraction solvent, compared with all ethanolic extracts used (1.2-2.0 %) (P<0.05). Much lower chlorophyll content was found in the water extract. When hot water was used, the resulting extract contained lower total phenolic and mimosine contents (P<0.05). In general, 60-80 % ethanolic extracts had higher 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activities, ferric reducing antioxidant power (FRAP) and metal chelating activity than water extracts (P<0.05). When brown lead seed was dechlorophyllised prior to extraction, the water extract had slightly increased yield with lower chlorophyll content. Nevertheless, prior chlorophyll removal resulted in the increase in antioxidative activities but lower total phenolic and mimosine contents (P<0.05). Generally, phenolic compounds and mimosine were more released when water was used as the extraction solvent, while the lower amount of chlorophyll was extracted. Oven-drying exhibited the negative effect on antioxidative activities and mimosine content. The higher antioxidative activities with concomitant higher total phenolic and mimosine contents were found in water extract dried by freeze drying. Thus, extraction solvent, dechlorophyllisation and drying methods directly influenced the yield and antioxidative activity of lead seed extract.

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Total Phenolics, Flavonoids, and Antioxidant Activity of Sage (Salvia officinalis L.) Plants as Affected by Different Drying Methods

Cited by 226 publications

References 48 publications

Evaluation of Thymus vulgaris Extract on Hippocampal Injury Induced by Transient Global Cerebral Ischemia and Reperfusion in Rat

Evaluation of Thymus vulgaris Extract on Hippocampal Injury Induced by Transient Global Cerebral Ischemia and Reperfusion in Rat

Effect of microwave drying and oven drying on the water activity, color, phenolic compounds content and antioxidant activity of coconut husk (Cocos nucifera L.)

Antioxidant activities of lead (Leucaena leucocephala) seed as affected by extraction solvent, prior dechlorophyllisation and drying methods

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