scholarly journals Antioxidant activity, carotenoids, chlorophylls and mineral composition from leaves of Pallenis spinosa: an Algerian medicinal plant

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Hanane Amrani-Allalou ◽  
Lila Boulekbache-Makhlouf ◽  
Paula Mapelli-Brahm ◽  
Sabrina Sait ◽  
Gian Carlo Tenore ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Solvent Extraction ◽  
Medicinal Plant ◽  
Antioxidant Capacity ◽  
Mineral Composition ◽  
Human Body ◽  
Spectrophotometric Method ◽  
Chlorophyll B ◽  
Good Source ◽  
Total Carotenoids

AbstractBackgroundPlant and medicinal herbs are important sources of bioactive compounds and minerals that can play a role in preventing various diseases and they are considered a factor indispensable for the proper functioning of the human body.MethodsWe investigated the content of carotenoids and chlorophylls of leaves from Pallenis spinosa (P. spinosa), as well as their antioxidant activity and mineral composition then, we optimized the solvent extraction for the recovery of total carotenoids and chlorophylls using spectrophotometric method. Finally, we tested the antioxidant activity of the optimized extract by three assays (DPPH, ABTS and FRAP) and we determined the mineral composition by Emission Spectrometer Induced Couple Plasma (ICP).ResultsCarotenoid (CART), chlorophylls (CHLa + b), chlorophyll a (CHLA), chlorophyll b (CHLB) contents were about 36.337 ± 0.312; 347.769 ± 6.326; 224.286 ± 5.601; 123.483 ± 1.339 mg/100 g dw, respectively. We revealed an interesting antioxidant capacity by the tested extract (DPPH: 127.522 ± 1.406 mmol ET/Kgdw, ABTS: 104.827 ± 1.222 mmol ET/Kgdw and FRAP 71.89 ± 0.495 ± 0.994 mmol ET/Kgdw). Carotenoids and chlorophylls content correlate positively with the antioxidant activity of P. spinosa leaves extract (r=0.646–0.986). Eight minerals have been detected (Mg, Ca, P, Fe, Mn, Zn, Cu and Cr), Mg and Ca being the predominant ones (6479.32 ± 48.33 and 3851.88 ± 130.63 mg/Kg, respectively).ConclusionsThese results have shown that P. spinosa leaves are a good source of carotenoids and chlorophylls with a potent antioxidant potential with high amount of minerals.

scholarly journals Selected dried fruits as a source of nutrients

2021 ◽  
Author(s):  
Iga Rybicka ◽  
Justyna Kiewlicz ◽  
Przemysław Łukasz Kowalczewski ◽  
Anna Gliszczyńska-Świgło
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Dietary Fiber ◽  
Mineral Composition ◽  
Nutritional Value ◽  
Sea Buckthorn ◽  
Dried Fruits ◽  
Goji Berry ◽  
Rose Hip ◽  
Unhealthy Snacks

AbstractDried fruits are an excellent alternative to unhealthy snacks. Twelve commercially available dried fruits were selected: dates, raisins, prunes, Goji berry, chokeberry, rose hip, sea buckthorn, berberis, physalis, haritaki, noni and juniper. The nutritional value in terms of moisture, ash, protein, fat, carbohydrate, dietary fiber, energy value, mineral composition, antioxidant activity and tannins was compared. It is a novelty in the literature in relation to the particular analytes (e.g., minerals, tannins) and/or fruits (e.g., berberis, noni, haritaki). Especially rich in protein were Goji berry (13.3%), sea buckthorn (9.3%), noni (8.9%) and physalis (8.0%); in fat − sea buckthorn (11.2%); in dietary fiber (4.4–53.0%) − most of analyzed products. High antioxidant capacity was noticed for haritaki, berberis, rose hip, Goji berry, and physalis. An important source of minerals was 100 g of: noni (345 mg of Ca; 251 mg of Mg), rose hip (844 mg of Ca; 207 mg of Mg), juniper (564 mg of Ca), sea buckthorn (58 mg of Fe), berberis (24 mg of Fe) and haritaki (14 mg of Fe). The nutritionally attractive dried fruits have the potential for wider application in food formulations.

scholarly journals Impact of Fermentation on Phenolic Compounds and Antioxidant Capacity of Quinoa

Fermentation ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 20
Author(s):  
Francesca Melini ◽  
Valentina Melini
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Phenolic Compound ◽  
Chenopodium Quinoa ◽  
Natural Antioxidants ◽  
Gluten Free ◽  
Good Source ◽  
Nutritional Profile ◽  
Seed Fermentation

Quinoa (Chenopodium quinoa Willd.) is increasingly singled out as a healthy food with an excellent nutritional profile. Besides being suitable for gluten-free diets, it is rich in proteins of excellent quality and is a good source of minerals and vitamins, as well as of natural antioxidants, such as phenolic compounds. The aim of this work is to present how fermentation can affect phenolic compound content and antioxidant capacity of quinoa. It emerged that fermentation can be used to increase phenolic compound content and antioxidant capacity in both quinoa seeds and flours. The use of fermented quinoa flours allowed obtaining bread and pasta richer in phenolic compounds and with a greater antioxidant capacity. Fungi are the main starters used in quinoa seed fermentation, while Lactobacillus strains have been applied to produce sourdoughs. Quinoa has been also fermented to obtain yogurt-like beverages with a higher content in phenolic compounds and a greater antioxidant activity. Strains of Lactobacillus sp. and Bifidobacterium sp. have been used as starters.

scholarly journals Nanoelicitors Application Promote Antioxidant Capacity of Asparagus officinalis (In Vitro)

2021 ◽  
Vol 11 (3) ◽  
pp. 259-265
Author(s):  
Reza Mohammadhassan ◽  
◽  
Annahid Ferdosi ◽  
Shiva Malmir ◽  
Alexander Marcus Seifalian ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Side Effects ◽  
Medicinal Plant ◽  
Antioxidant Capacity ◽  
Natural Antioxidants ◽  
Selenium Nanoparticles ◽  
Asparagus Officinalis ◽  
Dpph Assay ◽  
Male And Female ◽  
Modern Agriculture

Nanoparticles recently play remarkable roles in modern agriculture and biotechnology due to specific exclusively physicochemical and biological characteristics of the particles. In recent years, nanoparticles are been using as fertilizers and elicitors to improve crops. Nutritionists are constantly seeking natural antioxidants without side effects to using for healthcare and treatment. Asparagus officinalis L. as medicinal plant treated by iron (0, 10, 50 and 100 mg/L) and selenium (0, 0.5,and 1 mg/L) nanoparticles as nano elicitors. Then the antioxidant capacity of A. officinalis L. was detected and measured by α, α-diphenyl-β-picrylhydrazyl (DPPH) assay, for assessment of the antioxidant activity. The iron nanoparticlesconcentration significantly increases the antioxidant activity of both male and female asparagus stem, as well as selenium nanoparticles. When combined iron and selenium used as nano elicitors then cause the antioxidant activity significantly decreases. But the integration of two nano elicitors (iron and selenium) decreased antioxidant capacity while the use of nano-selenium could enhance antioxidant capacity. The application of nano elicitor increased antioxidant capacity in the female stem than male.Nanoparticles recently play remarkable roles in modern agriculture and biotechnology due to specific exclusively physicochemical and biological characteristics of the particles. In recent years, nanoparticles are been using as fertilizers and elicitors to improve crops. Nutritionists are constantly seeking natural antioxidants without side effects to using for healthcare and treatment. Asparagus officinalis L. as medicinal plant treated by iron (0, 10, 50 and 100 mg/L) and selenium (0, 0.5,and 1 mg/L) nanoparticles as nano elicitors. Then the antioxidant capacity of A. officinalis L. was detected and measured by α, α-diphenyl-β-picrylhydrazyl (DPPH) assay, for assessment of the antioxidant activity. The iron nanoparticlesconcentration significantly increases the antioxidant activity of both male and female asparagus stem, as well as selenium nanoparticles. When combined iron and selenium used as nano elicitors then cause the antioxidant activity significantly decreases. But the integration of two nano elicitors (iron and selenium) decreased antioxidant capacity while the use of nano-selenium could enhance antioxidant capacity. The application of nano elicitor increased antioxidant capacity in the female stem than male.

scholarly journals Antioxidant capacity of crude extracts containing carotenoids from the berries of various cultivars of Sea buckthorn (Hippophae rhamnoides L.).

2012 ◽  
Vol 59 (1) ◽  
Author(s):  
Michał Kruczek ◽  
Adam Swiderski ◽  
Aleksandra Mech-Nowak ◽  
Katarzyna Król
Keyword(s):  
Antioxidant Activity ◽  
Comparative Analysis ◽  
Antioxidant Capacity ◽  
Hplc Analysis ◽  
Sea Buckthorn ◽  
Total Carotenoids ◽  
Hippophaë Rhamnoides ◽  
Crude Extracts ◽  
High Antioxidant Activity ◽  
Hippophae Rhamnoïdes L

Comparative analysis of antioxidant capacity was performed using FRAP and DPPH methods on extracts containing carotenoids acquired from fruits of Sea buckthorn. The examination included nine varieties of Sea buckthorn growing in the comparative cultivation. Conducted analysis allowed to compare the antioxidant capacity with carotenoids content measured with spectrophotometric and HPLC methods. Three of the examined cultivars indicating high antioxidant activity in both, FRAP and DPPH methods, also revealed highest ('Aromatnaya') and high ('Botanicheskaya', 'Arumnyj') total carotenoids content in HPLC analysis.

scholarly journals Antioxidant Activity, Color, Carotenoids Composition, Minerals, Vitamin C and Sensory Quality of Organic and Conventional Mandarin Juice, cv. Orogrande

2011 ◽  
Vol 17 (3) ◽  
pp. 241-248 ◽  
Author(s):  
P. Navarro ◽  
A.J. Pérez-López ◽  
M.T. Mercader ◽  
A.A. Carbonell-Barrachina ◽  
J.A. Gabaldon
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Organic Farming ◽  
Sensory Quality ◽  
Good Source ◽  
Total Carotenoids ◽  
Trained Panel ◽  
Orange Color ◽  
Mandarin Juices

The effects of organic farming on antioxidant activity, CIE L*a*b* color, carotenoids composition, minerals contents, vitamin C and sensory quality of Orogrande mandarin juices were studied. Independent of the farming type, mandarin juices can be considered as good source of some important nutrients, such as potassium and antioxidant chemicals, for example, β-cryptoxanthin. Organic farming of mandarins resulted in juices with higher antioxidant activity, total carotenoids concentrations, minerals (Ca, K and Fe) contents, vitamin C content, more appealing and intense orange color and better sensory quality. For instance, organic Orogrande juice contained significantly (p < 0.001) higher total carotenoids content (22.7 ± 0.3 mg/L) than conventional juice (15.7 ± 0.4 mg/L); a similar pattern was observed for the antioxidant activity, with values being 0.076±0.004 and 0.053 ± 0.003 mM Trolox m/L in organic and convectional juices, respectively. A trained panel stated that organic Orogrande juices had higher intensities of orange color, fresh mandarin and floral aromas than conventional juices.

KADAR KALKON TOTAL DI DALAM EKSTRAK ETANOL BATANG ASHITABA (Angelica keiskei Koidzumi)

2019 ◽  
Vol 9 (2) ◽  
pp. 109-115
Author(s):  
Anisa Pebiansyah ◽  
Riezki Amalia ◽  
Diah Lia Aulifa ◽  
Jutti Levita
Keyword(s):  
Antioxidant Activity ◽  
Vitamin E ◽  
Secondary Metabolites ◽  
Medicinal Plant ◽  
Spectrophotometric Method ◽  
Ethanol Extract ◽  
Standard Addition ◽  
Angelica Keiskei ◽  
Dried Extract

ABSTRAK Ashitaba (Angelica keiskei) merupakan salah satu tanaman obat yang terbukti memiliki aktivitas antioksidan setara dengan vitamin E. Aktivitas antioksidan umumnya ditunjukkan oleh metabolit sekunder tanaman, terutama flavonoid. Di dalam batang ashitaba terkandung senyawa kalkon yaitu xantoangelol (XAG) dan 4-hidroksiderisin (4-HD), yang tergolong ke dalam flavonoid dengan cincin C terbuka. Penelitian ini bertujuan  untuk  menetapkan  kadar  kalkon  total  (dihitung  sebagai  XAG)  di  dalam ekstrak etanol batang ashitaba. Tanaman ashitaba diperoleh dari Gunung Rinjani, Lombok, dan dideterminasi di Sekolah Ilmu dan Teknologi Hayati Institut Teknologi Bandung.  Penetapan  kadar  kalkon  total  dilakukan  menggunakan  metode spektrofotometri standar adisi. Hasil penapisan fitokimia menunjukkan bahwa ekstrak etanol batang ashitaba mengandung senyawa flavonoid, alkaloid, polifenol dan tanin, sedangkan kalkon total yang terkandung  di dalam ekstrak etanol kering batang ashitaba dihitung sebagai XAG adalah 0,836 % b/b.Kata kunci : Ashitaba, antioksidan, xantoangelol, 4-hidroksiderisin, kalkon total. TOTAL CHALCONE CONTENT IN THE ETHANOL EXTRACT OF ASHITABA STEMS (Angelica keiskei Koidzumi)  ABSTRACT Ashitaba  (Angelica  keiskei)  is  a  medicinal  plant  that  has  been  proven  to  possess antioxidant activity equal to that of vitamin E. This antioxidant activity usually belongs to  the  plant’s  secondary  metabolites,  e.g.  flavonoids.  The  ashitaba  stem  contains chalcone compounds, e.g. xantoangelol (XAG) and 4-hydroxiderricin (4-HD), which are categorized as open C-ring flavonoids. The purpose of this study was to determine total chalcone content (calculated as XAG) in ethanol extract of ashitaba stem. Ashitaba plant was obtained from Mount Rinjani, Lombok, and was identified at School of Biology Sciences and Technology, ITB. The total chalcone was determined by using standard addition spectrophotometric method. Result showed that the ethanol extract of ashitaba stem contain flavonoids, alkaloids polyphenol, and tannins, whereas the dried extract of ashitaba stem contained 0.836% w/w of total chalcone calculated as XAG. Keywords: Ashitaba, antioxidant, xantoangelol, 4-hydroxiderricin, total chalcone.

scholarly journals Use of Yoghurt Enhanced with Volatile Plant Oils Encapsulated in Sodium Alginate to Increase the Human Body’s Immunity in the Present Fight Against Stress

2020 ◽  
Vol 17 (20) ◽  
pp. 7588
Author(s):  
Ovidiu Tița ◽  
Maria Adelina Constantinescu ◽  
Mihaela Adriana Tița ◽  
Cecilia Georgescu
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Antioxidant Capacity ◽  
Sodium Alginate ◽  
Human Body ◽  
Raw Materials ◽  
Stress Factors ◽  
Cow Milk ◽  
Aromatic Plants ◽  
Volatile Oils

(1) Background: The COVID–19 pandemic and the imposition of strict but necessary measures to prevent the spread of the new coronavirus have been, and still are, major stress factors for adults, children, and adolescents. Stress harms human health as it creates free radicals in the human body. According to various recent studies, volatile oils from various aromatic plants have a high content of antioxidants and antimicrobial compounds. An external supply of antioxidants is required to destroy these free radicals. The main purpose of this paper is to create a yoghurt with high antioxidant capacity, using only raw materials from Romania; (2) Methods: The bioactive components used to enrich the cow milk yoghurt were extracted as volatile oils out of four aromatic plants: basil, mint, lavender and fennel. Initially, the compounds were extracted to determine the antioxidant capacity, and subsequently, the antioxidant activity of the yoghurt was determined. The 2,2-diphenyl-1-picrylhy-drazyl (DPPH) method was used to determine the antioxidant activity; (3) Results: The results show that cow milk yoghurt enhanced with volatile oils of basil, lavender, mint and fennel, encapsulated in sodium alginate has an antioxidant and antimicrobial effect as a staple food with multiple effects in increasing the body’s immunity. The antioxidant activity proved to be considerably higher than the control sample. The highest antioxidant activity was obtained on the first day of the analysis, decreasing onwards to measurements taken on days 10 and 20. The cow milk yoghurt enriched with volatile basil oil obtained the best results; (4) Conclusions: The paper shows that yoghurts with a high antioxidant capacity were obtained, using only raw materials from Romania. A healthy diet, compliance with safety conditions and finding appropriate and safe methods to increase the body’s immunity is a good alternative to a major transition through harder times, such as pandemics. The creation of food products that include natural antioxidant compounds combines both the current great possibility of developing food production in Romania and the prevention and reduction of the effects caused by pandemic stress in the human body.

EXTRACTION OPTIMIZATION AND ANTIOXIDANT ACTIVITY OF PHENOLIC COMPOUNDS FROM AVOCADO PEEL

2019 ◽  
pp. 49-59
Author(s):  
Nu Linh Giang Ton ◽  
Thi Hoai Nguyen ◽  
Quoc Hung Vo
Keyword(s):  
Antioxidant Activity ◽  
Response Surface Methodology ◽  
Antioxidant Capacity ◽  
Response Surface ◽  
Total Antioxidant Capacity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Quadratic Model ◽  
Total Phenolic ◽  
Total Antioxidant

Avocado peel has been considered as a potential source of natural antioxidants in which phenolics are among the most important compounds. Therefore, this study aims to optimize the extraction process of phenolics using response surface methodology and evaluate the corresponding antioxidant activity. From the quadratic model, the optimal condition was determined including the ethanol concentration 54.55% (v/v), the solvent/solute ratio 71.82/1 (mL/g), temperature 53.03 oC and extraction time 99.09 min. The total phenolic content and the total antioxidant capacity at this condition with minor modifications were 26,74 ± 0,04 (mg GAE/g DW) and 188.06 ± 1.41 (mg AAE/g DW), respectively. The significant correlation between total phenolic content and total antioxidant capacity was also confirmed. Key words: response surface methodology, central composite rotatable design, total phenolic content, total antioxidant capacity, avocado peel

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