Storage method, drying processes and extraction procedures strongly affect the phenolic fraction of rosemary leaves: An HPLC/DAD/MS study

Mulinacci, Nádia; Innocenti, Marzia; Bellumori, Maria; Giaccherini, Catia; Martini, Valeria; Michelozzi, Marco

doi:10.1016/j.talanta.2011.03.050

Cited by 106 publications

(83 citation statements)

References 26 publications

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“…The same patt ern remained in the samples stored for one month, where blueberries were the richest in TPC (422 mg of GAE per 100 g), but the TPC loss during storage was the greatest in strawberries, where it was 61.1 mg of GAE per 100 g. These fi ndings for fresh berry fruits are in accordance with other studies (30)(31)(32). When the retention was expressed in percentage, the losses were between 0.3 % (blackberry) and 75 % (strawberry).…”

Section: Total Phenolic Content Of Berry Samplessupporting

confidence: 90%

Near-infrared spectroscopic analysis of total phenolic content and antioxidant activity of berry fruits

Kljusurić

Mihalev

Bečić

et al. 2016

Food Technol. Biotechnol.

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SummaryThis study evaluates the feasibility of using near-infrared (NIR) spectroscopy as a rapid and environmentally friendly technique for validation and prediction of the total phenolic content (TPC) and antioxidant activity (AOA) indices (as 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, inhibition time (IT) of the Briggs-Rauscher oscillating reaction, and relative antioxidant capacity (RAC)) of berry fruit extracts. The analysed berry samples originated from Croatia (blackberries, wild blueberries, raspberries, red currants and strawberries) and Bulgaria (wild blueberries, raspberries and strawberries). Principal component analysis and partial least squares (PLS) regression were used from the set of chemometric tools in distinguishing and validating the measured berry fruit extract. ANOVA and PCA showed no signifi cant impact of the origin and freshness of the samples. PLS models were developed to validate the relationship of NIR spectra with TPC and AOA of berry fruits. Representativeness of the models was expressed with the R 2 and the ratio of performance to deviation. Calculated R 2 values were above 0.84 and the ratio of performance to deviation was between 1.8 and 3.1, indicating adequacy of the PLS models.

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Section: Total Phenolic Content Of Berry Samplessupporting

confidence: 90%

Near-infrared spectroscopic analysis of total phenolic content and antioxidant activity of berry fruits

Kljusurić

Mihalev

Bečić

et al. 2016

Food Technol. Biotechnol.

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“…Also literature studies showed that each phenolic compound behave different depending on treatment method. Content of polyphenols after freezing increased (Mulinaccia et al, 2011).…”

Section: Figure 2 Content Of Polyphenols In Fresh Plantsmentioning

confidence: 94%

Phenolic profile of fresh and frozen nettle, goutweed, dandelion and chickweed leaves

Augspole¹,

Dūma²,

Ozola³

et al. 2017

FoodBalt

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Worldwide it is of great interest to find new and safe antioxidants from natural sources. Green leafy vegetables and wild plant leaves are healthy nutrients, containing vitamins, minerals and biological active compounds, therefore these plants provide beneficial health effects due to the presence of antioxidant compounds. It is useful and popular to supplement human diets with fresh or frozen edible plants. It is known that freezing may help to preserve the quality of plants, and is superior to other preservation methods. The aim of research was to compare the phenolic compounds content of fresh and frozen edible wild plants leaves grown in Latvia. The samples were processed using freezing -20 °C and for a comparison fresh samples were analysed. The leaves of stinging nettle (Urtica dioica), common goutweed (Aegopodium podagraria), dandelion (Taraxacum officinale) and chickweed (Stellaria media) were collected in May 2016 in Latvia. In the current research the content of total phenolics was determined in four types of fresh and frozen plant leaves and they can be arranged as follows (starting from plant with less phenolics content as gallic acid equivalent): dandelion

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“…The biological activities of rosemary aqueous extracts are mainly attributed to their high concentration of phenolic constituents namely carnosic and rosmarinic acids that are recognized as natural antioxidants [198] [199]. Many studies reported that the preventive effects of rosemary and its extracts are attributed to its antioxidant activity [200].…”

Section: Rosemary (Rosmarinus Officinalis)mentioning

confidence: 99%

Prevention of Nephropathy by Some Natural Sources of Antioxidants

Azab¹,

Albasha²,

Elsayed³

2017

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Nephrotoxicity is one of the most common kidney problems and occurs when the body is exposed to a drug or toxin. Natural sources of antioxidants may serve as a vital source of potentially useful new compounds for the development of an effective therapy to combat a variety of kidney problems. Natural antioxidants have a variety of biochemical actions such as inhibition of reactive oxygen species production, scavenging of free radicals. The present review aims to summarize the recent articles which studied some of the nephrotoxic agents, and alleviation of nephrotoxicity using of some natural products possessing antioxidant properties. Our review shows the oxidative damage and renal disorders induced in human and experimental animals by nephrotoxic agents such as gentamicin, alcohol, nicotine, adenine, glycerol, ethylene glycol, sodium nitrite, mercuric chloride, AlCl 3 , lead acetate, carbon tetrachloride (CCl 4 ), furosemide, carbendazim, diazinon, heat stress, and γ-radiation. Also, nephrotic disorders caused in diabetic rats, patients, cirrhotic ascetic patients, and ischemia-reperfusion. Administration of natural sources of antioxidants such as curcumin, garlic, fenugreek, parsley, peppermint, pomegranate, propolis, olive leaves, rosemary, and sesame attenuated both physiological and histopathological alterations induced in the kidney by the nephrotoxic agent and certain diseases. The nephroprotective effect of the former natural sources of antioxidants may be due to the enhancement of antioxidant activity and inhibition of tissue lipid peroxidation. It can be concluded that administration of curcumin, garlic, fenugreek, parsley, peppermint, pomegranate, propolis, olive leaves, rosemary, and sesame showed a remarkable kidney protection against nephrotoxic agents, and diseases induced renal dysfunctions in human and experimental animals. So, the present study recommended that the consumption of these natural sources of antioxidants may be useful for human exposure to nephrotoxic agents and patients who suffer from renal diseases.

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Storage method, drying processes and extraction procedures strongly affect the phenolic fraction of rosemary leaves: An HPLC/DAD/MS study

Cited by 106 publications

References 26 publications

Near-infrared spectroscopic analysis of total phenolic content and antioxidant activity of berry fruits

Near-infrared spectroscopic analysis of total phenolic content and antioxidant activity of berry fruits

Phenolic profile of fresh and frozen nettle, goutweed, dandelion and chickweed leaves

Prevention of Nephropathy by Some Natural Sources of Antioxidants

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