scholarly journals Fruit Pomological, Phytochemical Characteristic and Mineral Content of Rosehip Genotypes

2020 ◽  
pp. 18-23
Author(s):  
Nihal Acarsoy Bilgin ◽  
◽  
Adalet Mısırlı ◽  
Fatih Şen ◽  
Bilge Türk ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Natural Products ◽  
Vitamin C ◽  
Mineral Content ◽  
Antioxidant Activities ◽  
Total Phenol ◽  
High Demand ◽  
Nutrition And Health ◽  
Mineral Contents

Rosehips, which are commonly grown in nature in shrub form, are always popular due to their importance in terms of nutrition and health. Because fruits are rich in vitamin C, total phenol and mineral contents and antioxidant activities. Nowadays, there is high demand for natural products. Rosehip grows spontaneously in Turkey. In this study, 9 individuals were examined. Consequently, significant differences were stated according to genotypes for pomological and phytochemical characteristics. Vitamin C, phenol and antioxidant activity were found to affect P and Zn nutrients. Additionally, it was detected that P, K, Ca, Mg, Na Fe, Cu, Zn and Mn contents ranged in 0.09-0.17%, 1.35-1.86%, 1.05-1.44%, 0.43-069%, 50.00-100.00 ppm 28.50-48.30 ppm, 3.30-7.00 ppm, 8.06-12.56 ppm and 50.85-85.35 ppm, respectively. In this context, one of the genotypes has been found promising due to its content.

scholarly journals Phytochemistry and Antioxidant Activities of the Methanolic Leaf Extract of Clerodendrum splendens (Lamiaceae)

2018 ◽  
pp. 12-20
Author(s):  
Nganso Ditchou Yves Oscar ◽  
Amang A Ngoung GA ◽  
Soh Desire ◽  
Simo Nemg Fredy Brice ◽  
Nyasse Barthelemy
Keyword(s):  
Antioxidant Activity ◽  
Natural Products ◽  
Secondary Metabolites ◽  
Vitamin C ◽  
Leaf Extract ◽  
Antioxidant Activities ◽  
Maximum Activity ◽  
Hepatic Lipids ◽  
Ic50 Value ◽  
Ic50 Values

This paper aimed at studying the antioxidant efficacy of the methanolic leaf extract of Clerodendrum splendens, a plant of the Lamiaceae family. Phytochemical tests carried out on extracts of Clerodendrum splendens leaves have been able to detect the presence of secondary metabolites such as Flavonoids, Tannins, Saponins and Terpenoids. The results of the antioxidant activity have shown that CSF2, CSF3 fractions and CSB, CSG fractions similarly inhibited hepatic lipids but significantly less than vitamin C. Compared to all fractions, the CSB fraction shows the best inhibitor on the peroxidation of hepatic lipids because at 150 μg/mL, there is a maximum activity (2.5 μg/mL of protein). However, it is found that CSF3, CSF2 and CSG have higher IC50 values than vitamin C (5.613±0.117) while CSEB, CSB and CSC fractions showed lower IC50 values than vitamin C, which is used as the reference reducing compound. The lower the IC50 value compared to vitamin C, the greater the antioxidant capacity of the plant extract. The results of this study suggest that Clerodendrum splendens represents an untapped source of compounds with potential antioxidant activity that could be explored in the development of new therapeutic natural products.

scholarly journals Aktivitas Antioksidan dan Komposisi Kimia Keong Matah Merah (Cerithidea obtusa) (Antioxidant Activity and Nutrient Composition of Matah Merah Snail (Cerithidea obtusa))

2012 ◽  
Vol 17 (1) ◽  
pp. 39 ◽  
Author(s):  
Sri Purwaningsih
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Antioxidant Activities ◽  
Essential Amino Acids ◽  
Positive Control ◽  
Nutrient Composition ◽  
Mineral Contents ◽  
Aoac Method ◽  
Amino Acid Contents ◽  
Natural Foods

Beberapa komponen antioksidan dihasilkan oleh bahan pangan secara alamiah termasuk bahan dari hasil perairan. Keong Matah Merah (Cerithidea obtusa) merupakan komoditas perikanan yang biasa dikonsumsi masyarakat dan diyakini bisa digunakan sebagai obat. Tujuan penelitian ini adalah untuk menganalisis aktivitasantioksidan dan komposisi kimia dari Keong Matah Merah. Komposisi kimia Keong Matah Merah dianalisis dengan metode AOAC untuk kandungan proksimat, kandungan mineral dengan metode APHA, kandungan asam amino dengan metode AOAC . Penentuan aktivitas antioksidan dilakukan dengan metode Molyneux. Hasil penelitian menunjukkan bahwa Keong Matah Merah (Cerithidea obtusa) mempunyai kadar: air 77,5%, protein 13,8%, lemak 2,8%, dan abu 4,5%, makro mineral tertinggi natrium 283,45 mg/100 g dan terendah kalsium39,78 mg/100 g, kadar mikro mineral tertinggi selenium 39,25 mg/100 g dan terendah tembaga 0,29 mg/100 g. Kandungan asam amino esensial tertinggi isoleusin 4,82 % dan terendah arginin 0,95%, kandungan asam amino non-esensial tertinggi asam glutamat 12,08% dan terendah sistein 0,84%. Ekstrak metanol pada Keong Matah Merah mempunyai aktivitas sebagai antioksidan kuat dan mempunyai nilai IC50 58,19 ppm dengan pembanding vitamin C sebesar 3,55 ppm.Kata kunci: Keong Matah Merah, Cerithidea obtusa, gizi, antioksidanAntioxidant compounds are frequently produced by natural foods. Matah Merah Snail (Cerithidea obtusa) is one of fishery commodities which is commonly consumed by society and traditionally used for therapeutic purposes. The aim of this research was to investigate the nutrient composition and antioxidant activity of Matah Merah (C. obtusa). The nutrient compounds were analyzed using proximate contents according to AOAC method, mineral contents using APHA method, and amino acid contents using AOAC method. The results showed that Matah Merah Snail (Cerithidea obtusa) contained 77.5% of moisture, 13.8% of protein, 2.8% of fat, and 4.5% of ash. Analyses of macro- and micro-minerals revealed that the highest level of macro-minerals was sodium 283.45 mg/100 g and the lowest one was calcium 39.78 mg/100 g. The highest level of micro-minerals was selenium 39.25 mg/100 g and the lowest one was copper 0.29 mg/100 g. The highest content of essential amino acidswas isoleusin 4.82% and the lowest one was arginine 0.95%. The highest content of non-essential amino acids was glutamic acid 12.08% and the lowest one was cysteine 0.84%. Methanol extract of Matah Merah Snail (C.obtusa) displayed potential antioxidant activities with IC50 value of 58,19 ppm, with IC50 of vitamin C as positive control was 3,555 ppm.Key words: Matah Merah Snail, Cerithidea obtusa, nutrition , antioxida

Determination of the best method for processing gambier liquid by-product [Uncaria gambir (hunter) roxb] as natural antioxidant sources

2021 ◽  
Vol 46 (2) ◽  
pp. 166-172
Author(s):  
A. S. Ismail ◽  
Y. Rizal ◽  
A. Armenia ◽  
A. Kasim
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Freeze Drying ◽  
Antioxidant Activities ◽  
Total Phenol ◽  
Natural Antioxidant ◽  
Drying Methods ◽  
Processing Methods ◽  
Dry Extract ◽  
Dpph Method

The study was conducted to determine the best gambier liquid by-product (GLB) processing methods based on antioxidant activity as natural antioxidant sources. The processing methods were A (ethyl acetate fractionation), B (oven drying) and C (freeze drying) methods. The observed variables were dry extract (using weighing method), tannin (using hide powder method), catechin (using SNI 01- 339-2000 method), total phenol (using folin ciocalteu reagents) and antioxidant activities (DPPH method) based on ICAO50. These antioxidant activities were compared with vitamin C as a positive control. The results indicated that the different processing methods significantly affected (P<0.05) dry extract, tannin, catechin, total phenol and antioxidant activity of GLB. The highest dry extract, tannin, catechin, total phenol, and antioxidant activity from GLB were at treatment B (10.76%), B (39.69%), A (86.07%), C (80.97 mg GAE/g), and C (ICAO50 2.74 µg/mL), respectively. The antioxidant activity on treatment C was not different from vitamin C antioxidant activity (2.88µg/mL). Thus, the treatment C (freeze drying method) was the best method to process GLB based on antioxidant activity as natural antioxidant sources.

Process Development of Ergothioneine by Submerged Fermentation of a Novel Medicinal Mushroom Panus Conchatus

2021 ◽  
Author(s):  
Min Zhu ◽  
Yiwen Han ◽  
Xuechao Hu ◽  
Lujing Ren
Keyword(s):  
Antioxidant Activity ◽  
Natural Products ◽  
Cell Growth ◽  
Vitamin C ◽  
Submerged Fermentation ◽  
Process Development ◽  
New Method ◽  
Good Stability ◽  
Medicinal Mushroom ◽  
Depth Study

Abstract Ergothioneine is a natural and safe antioxidant playing an important role in anti-aging and the prevention of various diseases. Mushrooms are the main dietary source of ergothioneine. This study aims to report a kind of medicinal mushroom Panus conchatus with great potential for the bioproduction of ergothioneine. Molasses and soy peptone could promote cell growth of Panus conchatus and enhance the accumulation of ergothioneine. Meanwhile, three precursors of cysteine, histidine and methionine were added to the broth, and the highest ergothioneine concentration of 148.79mg/L was obtained when adding 0.4 g/L cysteine. Finally, the crude ergothioneine extract was purified and further evaluated. The ergothioneine from Panus conchatus showed higher antioxidant activity than vitamin C and glutathione with good stability at lower pH environment. This research would provide a new method for the bioproduction of ergothioneine and lay foundation for the in-depth study about the exploration of natural products from Panus conchatus.

Total phenol, flavonoid, proanthocyanidin and vitamin C levels and antioxidant activities of Mauritian vegetables

2004 ◽  
Vol 84 (12) ◽  
pp. 1553-1561 ◽  
Author(s):  
Theeshan Bahorun ◽  
Amitabye Luximon-Ramma ◽  
Alan Crozier ◽  
Okezie I Aruoma
Keyword(s):  
Vitamin C ◽  
Antioxidant Activities ◽  
Total Phenol

Antihemolytic and antioxidant activities of Allium paradoxum

2010 ◽  
Vol 5 (3) ◽  
pp. 338-345 ◽  
Author(s):  
Mohammad Ebrahimzadeh ◽  
Seyed Nabavi ◽  
Seyed Nabavi ◽  
Bahman Eslami
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Aerial Part ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Dependent Manner ◽  
Vitro Assay ◽  
Aerial Parts

AbstractAntioxidant activity of the aerial part and bulbs of Allium paradoxum was investigated by eight in vitro assay systems. Extracts showed good antioxidant activity. IC50 for 1,1-diphenyl-2-picryl hydrazyl radical-scavenging activity was 890.9±43.2 and 984.9±33.5 µg/ml for the aerial part and bulbs, respectively. The aerial parts have better reducing power than bulb extracts but not comparable with Vitamin C (P>0.001). Extracts showed weak Fe2+ chelating ability, the IC50 being 959±47 and 530±24 µg/ml for bulbs and aerial parts, respectively. Both tested extracts exhibited good hydrogen peroxide scavenging in a concentration dependent manner. They exhibited good antioxidant activity against the hemoglobin-induced linoleic acid system that was comparable with vitamin C (P>0.01). They showed good activity against cumene hydro peroxide induced hemolysis in RBCs. In addition, they possessed antihemolytic activity. The extract from aerial parts had significantly higher total phenol and flavonoid content than did bulbs. Amounts of eight elements (Cu, Mn, Zn, Fe, Ni, Pb, Cd and Cr) were also determined in the bulb and aerial part using atomic absorption spectroscopy. They contained higher Fe and Mn contents than other elements.

scholarly journals Comparison of the Antioxidant Activity of Malaysian Ginger (Zingiber officinale Roscoe) Extracts with that of Selected Natural Products and its Effect on the Viability of Myoblast Cells in Culture

2021 ◽  
Vol 50 (5) ◽  
pp. 1445-1456
Author(s):  
Nur Fatin Nabilah Mohd Sahardi ◽  
Faizul Jaafar ◽  
Siti Nor Asyikin Zakaria ◽  
Jen Kit Tan ◽  
Mariam Firdhaus Mad Nordin ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Natural Products ◽  
Moringa Oleifera ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Centella Asiatica ◽  
Butylated Hydroxytoluene ◽  
Therapeutic Effects ◽  
Antioxidant Power ◽  
Ficus Deltoidea

Ginger has been proven to possess various therapeutic effects, including antibacterial, anticancer, anti-inflammatory, and antioxidant effects. However, data on the comparison of ginger antioxidant activity with that of other natural products are still lacking. This study aimed to analyse and compare the antioxidant properties of two types of Malaysian ginger extracts (GE1 and GE2) with that of selected natural products. The antioxidant activities were measured by 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) and ferric reducing antioxidant power (FRAP) assays, while cell viability was determined by 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfonyl)-2H-tetrazolium (MTS) assay. The order of the DPPH scavenging activities was as follows: vitamin C > palm tocotrienol-rich fraction (TRF) > á-tocopherol > N-acetylcysteine (NAC) > Ficus deltoidea > butylated hydroxytoluene (BHT) > Centella asiatica > GE2 > GE1 > Moringa oleifera > Kelulut honey; the order of the mean FRAP value was as follows: NAC > á-tocopherol > BHT > TRF > Ficus deltoidea > Moringa oleifera > GE2 = GE1 > Centella asiatica > Kelulut honey. The viability assays showed that both ginger extracts significantly increased the percentage of viable cells (p < 0.05). In conclusion, neither of the ginger extracts was cytotoxic toward cells and both possessed comparable antioxidant properties, indicating their potential for ameliorating oxidative stress.

scholarly journals UJI AKTIVITAS ANTIOKSIDAN BEBERAPA EKSTRAK ALGA COKLAT Sargassum polycystum DAN Turbinaria deccurens ASAL PULAU DUTUNGAN SULAWESI SELATAN TERHADAP RADIKAL DPPH

2019 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Fitriyanti Jumaetri Sami ◽  
Nunuk Hariani Soekamto ◽  
Firdaus Firdaus ◽  
Jalifah Latip
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Ethyl Acetate ◽  
Antioxidant Activities ◽  
Antioxidant Vitamin ◽  
Activity Assay ◽  
Immersion Method ◽  
Ic50 Value ◽  
Measured Absorption ◽  
Hexane Extracts

This study used S. polycystum and T. deccurens were extracted with various solvents (n-hexane, ethyl acetate and ethanol) to determine phytochemical screening and antioxidant activities. Extraction of samples by maceration method, antioxidant activity assay using the immersion method of DPPH (1,1-Diphenyl-2-picryl Hidrazil) measured absorption at a wavelength of 515 nm and compared with the control of antioxidant vitamin C. The results showed that antioxidant activity of the methanol, ethyl acetate, n-hexane extract of S. polycystum have low antioxidant activity with the value IC50 340,06, 180,54, and 502,25 mg/mL. Methanol, ethyl acetate, n-hexane extracts of  T. deccurens have low antioxidant activity with value IC50 491,02, 411,80, and 502,7 mg/mL. This potential is lower than vitamin C IC50 value of 1,72 mg/mL. 

scholarly journals Influence of drying on bioactive compounds and antioxidant activity of fruits of guabiju (Myrcianthes pungens)

2021 ◽  
Vol 10 (8) ◽  
pp. e5510817024
Author(s):  
Vanessa Barbieri Bombana ◽  
Carolina Elisa Demaman Oro ◽  
Diane Rigo ◽  
Caroline Chies Polina ◽  
Andressa Franco Denti ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Vitamin C ◽  
Water Activity ◽  
Bioactive Compounds ◽  
Antioxidant Activities ◽  
Dry Extract ◽  
Influence Of Temperature ◽  
Physical Chemical ◽  
Influence Of Temperature On

The objective of this work was to evaluate the influence of temperature on the content of bioactive compounds of fruits of guabiju (Myrcianthes pungens (O. Berg) D. Legrand). The peel, pulp and seed of fresh guabiju were analyzed in relation to physical-chemical composition, metals, color, phenolic compounds, flavonoids, anthocyanins, vitamin C and antioxidant activity. On the dehydrated samples at temperature of 60 °C, where also determined the moisture and water activity. The fractions of the fruit showed high amounts of metals. After drying, moisture of 1.3, 1.0 and 0.9% were observed for peel, pulp and seed and water activity of 0.44 to 0.54. All the samples darkened, with less variation in the dehydrated peel (∆E 9.2). The samples showed high values of bioactive compounds, and in the fresh peel were observed higher levels of phenolic compounds (8459.8 mg EGA/100g dry extract), anthocyanins (152.0 mg/100 dry extract) and vitamin C (222.9 mg/100g) and on the dehydrated seed higher value of flavonoids (7480.7 mg EQ/100g dry extract). There was 86.3% degradation of anthocyanins in the dehydrated peel. The best values of antioxidant activities were obtained for the dehydrated peel (IC50 1.37 mg/mL), seed (IC50 1.49 mg/mL) and in the fresh peel (IC50 1.41 mg/mL).

scholarly journals Uji Aktivitas Antioksidan Ekstrak Buah Semangka (Citrullus lanatus)

2018 ◽  
Vol 7 (2) ◽  
pp. 96
Author(s):  
Sri Mariani ◽  
Nurdin Rahman ◽  
Supriadi Supriadi
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Antioxidant Activities ◽  
Citrullus Lanatus ◽  
Natural Antioxidants ◽  
Positive Control ◽  
Control Measurement ◽  
Ic50 Value ◽  
Ic50 Values

The aim of this study is determine the IC50 extracts values of white peel and flesh of red watermelon, white peel and flesh of yellow watermelon as antioxidants. To determine antioxidant activities DPPH reagent was used as well as UV-Vis Spectrophotometry was used to measure vitamin C as a positive control measurement. The samples mixed with ethanol in various concentration of 5, 15, 25 and 35 mg/L. The results showed that the IC50 values for each extract of red watermelon flesh, yellow watermelon flesh, white peel of red watermelon, and white peel of yellow watermelon were 16.619 mg/L, 16.575 mg/L, 14.729 mg/L, and 16.782 mg/L, respectively. Vitamin C as the positive control has IC50 value of 9.526 mg/L. These IC50 values showed that vitamin C had higher antioxidant activity than watermelon extracts, but the extracts of watermelon still categorized in strong natural antioxidants. This study concluded that watermelon is good to be consumed because it is a very strong antioxidant.

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