Study on chemical composition and biological activities of essential oil and extracts from Stevia rebaudiana Bertoni leaves

Muanda, François Nsemi; Soulimani, Rachid; Diop, Babakar; Dıcko, Amadou

doi:10.1016/j.lwt.2010.12.002

Cited by 133 publications

(92 citation statements)

References 32 publications

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“…Unlike root, antioxidant activity of leaves (on average 91.4%) was not significantly affected by pH value of control media. Our results on DPPH activity of leaf extracts obtained from plants cultivated on hormone-free media are comparable to those of Muanda et al [5] though in the study the activity was a few percents higher (96.9). GA3 media with pH levels 4.6 and 7.4 had negative effect on DPPH radical scav- enging activity of leaves and roots while those activities were slightly stimulated by concurrent application of GA3 and BA.…”

Section: Effect Of Growth Regulators and Medium Ph On Total Phenolicssupporting

confidence: 90%

“…Conversely to IBA, the highest concentration of IAA caused the greatest reduction in antioxidant activity of leaf extracts. As in several investigations on S. rebaudiana antioxidant activity [5,6,7], significant correlations between the contents of total phenolics or flavonoids and DPPH radical scavenging activity were found in our study as well.…”

Section: Effect Of Growth Regulators and Medium Ph On Total Phenolicssupporting

confidence: 89%

“…Application of different growth regulators (used either singly or in combination) and medium pH value significantly affected accumulation of total phenolics and total flavonoids and their distribution between different tissues (Table 3, 4; Fig 2) [5], Tadhani et al [7] and Abou-Arab and Abu-Salem [14] although the extracts were prepared by different methods. In the first study leaves were extracted using methanolwater (50/50 v/v) solution in a similar way as in our study whereas in two latter studies leaves were extracted in HClmethanol solution, then evaporated to dryness and reextracted with hot water.…”

Section: Effect Of Growth Regulators and Medium Ph On Total Phenolicsmentioning

confidence: 99%

“…The antioxidant effects of polyphenols are connected with their free radical scavenging activity, metal chelating ability and inhibition of enzymes involved in the oxidative processes, the properties mostly attributed to the phenolic hydroxyl groups attached to ring structures [4]. The relationship between antioxidant activity of S. rebaudiana leaf extracts and their polyphenolic compounds has been demonstrated by several studies [5,6,7]. However, propagation of S. rebaudiana by seeds results in heterogeneous populations and consequently varying composition including polyphenolics levels.…”

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confidence: 99%

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Influence of pH and plant growth regulators on secondary metabolite production and antioxidant activity of Stevia rebaudiana (Bert)

et al. 2016

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Background and purpose: Beside being rich with sweet glycosides, Stevia rebaudiana Bertoni is an interesting source of flavonoids and phenols. The current study aimed to assess the potential for increasing total phenols and flavonoids in S. rebaudiana tissue by varying concentrations of plant growth regulators (PGR) and pH levels of media. Materials and methods:The culture was established from seeds and propagated shoots were cultured on media of different pH levels (4.6, 5.8 and 7.4) and PGR. Total polyphenolics and free radical scavenging capability of leaf, callus and root extracts were determined. Shoot height, root length, shoot and root number were also recorded. Results: Shoot elongation and root development was stimulated by singly applied growth regulators though the values of both parameters were also satisfactory in PGR-free media. In the latter media, pH value of 4.6 was a main factor for increasing leaf metabolite levels. A most significant rise in phenols and flavonoids was evident in response to combination of BA either with GA3 or IAA compared to singly applied regulators indicating synergistic effects of PGR (especially of auxins and cytokinins). However, polyphenolics levels and their distribution between different tissues were also influenced by medium pH value. A positive correlation was found between antioxidant activity of S. rebaudiana extracts and phenols and flavonoids. Conclusions: The results show that PGR and medium pH value strongly affect accumulation of secondary metabolites and can lead to significant enhancement in productivity of bioactive polyphenolics in S. rebaudiana plant cultures. INTRODUCTION S tevia rebaudianaBertoni is a small perennial shrub of the Asteraceae family, native to South and Central America. S. rebaudiana occurs naturally on infertile, acid (pH 4 to 5) soils, but thrives with soil pH as high as 7.5 [1,2]. The plant is known worldwide principally for its high content of sweet diterpene glycosides, rebaudioside A and stevioside (the most prevalent glycoside) in leaf tissue and is being used as a low-calorie and non-toxic sweetener. Moreover, antimicrobial, antiviral, anticarcinogenic and antioxidant activity of S. rebaudiana leaf extracts was demonstrated by a number of studies. S. rebaudiana is also a good source of inulin-type carbohydrates, proteins, essential oils, minerals, vitamins as S. Radić et al. Influence of pH and plant growth regulators on Stevia rebaudiana 10Period biol, Vol 118, No 1, 2016.well as flavonoids and phenolic compounds [3]. Similar to other plant secondary metabolites, polyphenols have roles in protection against infections, attraction of pollinators and seed-dispersing animals, as allelopathic agents and are generally involved in plant defense against ultraviolet radiation. However, these bioactive compounds have attracted much scientific attention due to their beneficial effects on human health, notably in the prevention of various diseases associated with oxidative stress. The antioxidant effects of polyphenols are co...

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Section: Effect Of Growth Regulators and Medium Ph On Total Phenolicssupporting

confidence: 90%

Section: Effect Of Growth Regulators and Medium Ph On Total Phenolicssupporting

confidence: 89%

Section: Effect Of Growth Regulators and Medium Ph On Total Phenolicsmentioning

confidence: 99%

mentioning

confidence: 99%

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Influence of pH and plant growth regulators on secondary metabolite production and antioxidant activity of Stevia rebaudiana (Bert)

et al. 2016

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“…Muanda i wsp. [24] w ekstraktach wodnych i metanolowych stewii oznaczyli odpowiednio 20,85 mg/g polifenoli ogółem, w tym 20,68 mg /g flawonoidów, oraz 25,25 mg/g polifenoli, w tym flawonoidów -23,46 mg/g. Najwięcej związków polifenolowych ogółem stwierdzili Shukla i wsp.…”

Section: Aktywność Przeciwutleniającaunclassified

Profile and Pro-Health Properties of Stevia Rebaudiana Bertoni

Bugaj¹,

Leszczyńska²,

Pysz³

et al. 2013

ZNTJ

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BARBARA BUGAJ, TERESA LESZCZYŃSKA, MIROSŁAW PYSZ, ANETA KOPEĆ, JOANNA PACHOLARZ, KATARZYNA PYSZ-IZDEBSKA  CHARAKTERYSTYKA I PROZDROWOTNE WŁAŚCIWOŚCISTEVIA REBAUDIANA BERTONI S t r e s z c z e n i e Stevia rebaudiana Bertoni, z rodziny Asteraceae, pochodzi z Brazylii i Paragwaju. Wzbudziła zainteresowanie żywieniowców dzięki dwóm związkom: rebaudiozydowi A i stewiozydowi. Wymienione glikozydy mają właściwości słodzące do 300 razy silniejsze od sacharozy. Roślina charakteryzuje się rów-nież wysoką aktywnością przeciwutleniającą wynikającą m.in. z dużej zawartości polifenoli. Ekstrakty liści stewii wykazują korzystne działanie prozdrowotne. Wiąże się to ze specyficznym działaniem rośliny, obejmującym właściwości: przeciwzapalne, hipoglikemiczne, hipotensyjne, modulujące procesy immunologiczne, przeciwpróchnicze i przeciwwirusowe.Słowa kluczowe: Stevia rebaudiana, stewiozyd, słodzik niskokaloryczny, właściwości prozdrowotne Wprowadzenie Nadmierna konsumpcja cukru może być przyczyną problemów zdrowotnych, dlatego wciąż poszukuje się alternatywnych substancji o dużej mocy słodzącej, a równo-cześnie o małej kaloryczności. Najbardziej znanymi dodatkami do żywności, umożli-wiającymi wyeliminowanie sacharozy, są substancje intensywnie słodzące. Większość z nich należy do związków syntetycznych. Ich często metaliczny posmak nie zapewnia korzystnych wrażeń smakowych, a stosowanie niektórych związków może powodować uboczne skutki zdrowotne.Stevia rebaudiana, będąca źródłem naturalnych związków słodzących, może być pożądanym zamiennikiem cukru. Zasadność jej stosowania bywa kontrowersyjna, a status prawny rośliny jest niejednakowy w różnych krajach. Opisywane w literaturze właściwości prozdrowotne stewii nie są dostatecznie udowodnione, jednak zainteresowanie tą rośliną i popyt na nią powodują konieczność ich pełnego poznania. Ponadto,

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Herbal Extracts as Potential Antioxidant, Anti‐Aging, Anti‐Inflammatory, and Whitening Cosmeceutical Ingredients

Chaiyana

Charoensup

Sriyab

et al. 2021

Chemistry & Biodiversity

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The aim of this research was to investigate and compare the antioxidant, anti-tyrosinase, anti-aging, and antiinflammatory activities of 16 herbal extracts for topical application in cosmetic/cosmeceutical products. Herbal plant materials were extracted by infusion in boiled water for 15 min. The total phenolic content and total flavonoid content of each extract were investigated by the Folin-Ciocalteu and aluminum chloride methods, respectively. Antioxidant activities were investigated using 2,2'-diphenyl-1-picrylhydrazyl and a ferric reducing antioxidant power assay. Anti-tyrosinase and anti-aging activities were investigated using an in vitro enzymaticspectrophotometric method. Anti-inflammatory activities were investigated using an enzyme-linked immunosorbent assay. The findings show that the Stevia rebaudiana extract has the most significant levels of both phenols and flavonoids (p < 0.05). The S. rebaudiana, Rosa damascene, and Phyllanthus emblica extracts possessed the most significant antioxidant activities (p < 0.05) and a promising whitening effect with moderate antityrosinase activities. Furthermore, the Echinacea purpurea extract possessed the most significant anti-collagenase (78.5 � 0.0 %), anti-elastase (69.0 � 1.4 %), and anti-hyaluronidase activity (64.2 � 0.3 %). The Morus alba extract possessed the most significant anti-inflammatory activity since it could inhibit the secretion of interleukin-6 and tumor necrosis factor-α (p < 0.05). Therefore, these herbal extracts have promising skin benefits and have potential for use as active ingredients in cosmetic/cosmeceutical products.

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Study on chemical composition and biological activities of essential oil and extracts from Stevia rebaudiana Bertoni leaves

Cited by 133 publications

References 32 publications

Influence of pH and plant growth regulators on secondary metabolite production and antioxidant activity of Stevia rebaudiana (Bert)

Influence of pH and plant growth regulators on secondary metabolite production and antioxidant activity of Stevia rebaudiana (Bert)

Profile and Pro-Health Properties of Stevia Rebaudiana Bertoni

Herbal Extracts as Potential Antioxidant, Anti‐Aging, Anti‐Inflammatory, and Whitening Cosmeceutical Ingredients

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