scholarly journals Changes in bitterness, antioxidant activity and total phenolic content of grapefruit juice fermented by Lactobacillus and Bifidobacterium strains

2020 ◽  
Vol 49 (1) ◽  
pp. 103-110
Author(s):  
A.M. Tran ◽  
T.B. Nguyen ◽  
V.D. Nguyen ◽  
E. Bujna ◽  
M.S. Dam ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Acetic Acid ◽  
Fermentation Process ◽  
Grapefruit Juice ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Cell Counts ◽  
Nutrition Supplementation

Four strains of Lactobacillus and Bifidobacterium including L. plantarum 01, L. fermentum D13, L. rhamnosus B01725, and B. bifidum B7.5 exhibiting naringinase production were applied in grapefruit juice fermentation. All investigated strains grew well in grapefruit juice without nutrition supplementation. In all cases, cell counts were 108–109 CFU ml−1 after 24 hours of fermentation. The highest lactic acid and acetic acid productions were observed in the case of strain L. plantarum 01. The L. plantarum 01 and L. fermentum D13 strains prefer glucose over fructose and sucrose, whereas fructose was the most favoured sugar for L. rhamnosus B01725 and B. bifidum B7.5. At the end of the fermentation process, antioxidant activity and total polyphenol content of grapefruit juice decreased in all cases, but the changes were not significant. Significant decrease of naringin was observed in the case of L. plantarum 01, 28% naringin in grapefruit juice was removed after fermentation. This result is promising for development of technology for production of probiotic grapefruit juice.

scholarly journals The Influence of Time and Storage Conditions on the Antioxidant Potential and Total Phenolic Content in Homemade Grape Vinegars

Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7616
Author(s):  
Justyna Antoniewicz ◽  
Joanna Kochman ◽  
Karolina Jakubczyk ◽  
Katarzyna Janda-Milczarek
Keyword(s):  
Antioxidant Activity ◽  
Fermentation Process ◽  
Storage Conditions ◽  
Antioxidant Potential ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Fermented Foods ◽  
Polyphenol Content ◽  
Spontaneous Fermentation ◽  
Potential Health

Fermented foods have been an integral part of the cuisines of almost all cultures in the world. In recent years, they have gained ground again, mainly due to their potential health benefits. One such product is grape vinegar, which apart from characteristic taste, is also a source of compounds with antioxidant activity. The aim of the study was to determine the changes in the antioxidant potential and the content of polyphenols that occur during the storage of grape vinegar obtained by spontaneous fermentation. The research material consisted of vinegar made from different white grape varieties grown in Poland. For each variety, two variants were prepared: with and without the addition of sugar in the fermentation process. The antioxidant potential, polyphenol content, soluble solids content and pH were monitored both during the two-month fermentation process and the subsequent 6-months storage under various conditions. Storage conditions and time of the storage affected the antioxidant activity and polyphenol content. The content of these compounds was also influenced by the variety of grapes used as well as the method of vinegar preparation.

Effect of Extraction Process on Extraction Yeild, Total Polyphenol Content and Antioxidant Activity of Jasminum Subtriplinerve

2019 ◽  
Vol 814 ◽  
pp. 527-531
Author(s):  
Trieu Tuan Anh ◽  
Luu Tu Hao ◽  
Long Giang Bach ◽  
Duy Chinh Nguyen ◽  
Tri Duc Lam
Keyword(s):  
Antioxidant Activity ◽  
Extraction Process ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Extraction Temperature ◽  
Total Phenolic Compounds ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Herbal Plants ◽  
Optimized Conditions

Jasminum Subtriplinerve Blume (Oleaceae) is herbal plants widely a tea for weight loss, stimulates milk glands. Extract product it easy used yet had little research. This study was carried out to evaluate the effect of extracting conditions such as water/material ratio, extraction temperature and extracting time on extracting yield, polyphenol content and antioxidant activity of J.subtriplinerve extract. The total phenolic compounds were determined according to the Folin–Ciocalteu method. Extraction yield (0.22g/100 g) was obtained at water/material ratio 15:1 (ml/g), 40°C and 4 hours extraction time. Under these optimized conditions, the polyphenol content of was 2640.4 μg/1g extract. And the extract can harvest 46.11 % of DPPH (30 μg/ mL) at 10 000 μg/ml concentration

scholarly journals Thai Rice Vinegars: Production and Biological Properties

2021 ◽  
Vol 11 (13) ◽  
pp. 5929
Author(s):  
Samuch Taweekasemsombut ◽  
Jidapha Tinoi ◽  
Pitchaya Mungkornasawakul ◽  
Nopakarn Chandet
Keyword(s):  
Antioxidant Activity ◽  
Antibacterial Activity ◽  
Acetic Acid ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Biological Properties ◽  
Total Phenolic ◽  
Glutinous Rice ◽  
Ic50 Value ◽  
Rice Vinegar

Four types of traditional Thai rice—polished, black fragrant, glutinous and black glutinous rice—were separately used as raw material for vinegar production. During alcohol fermentation, using enriched baker’s dried yeast (S. cerevisiae) as a starter culture gave the highest ethanol content over 7 days of fermentation. The conversion of ethanol to acetic acid for vinegar production by Acetobacter pasteurianus TISTR 102 was performed for 25 days. The highest amount of acetic acid was detected with glutinous rice fermentation (6.68% w/v). The biological properties of Thai rice vinegars were determined, including the total phenolic content, antioxidant activity, antibacterial activity and cytotoxicity. Black glutinous rice vinegar exhibited the maximum total phenolic content of 133.68 mg GAE/100 mL. This result was related to the antioxidative activity findings, for which black glutinous rice vinegar exhibited the strongest activity against both ABTS•+ and DPPH• radicals. Cytotoxicity against the human colon cancer cell line (HT-29) provided an IC50 value of 74.02 μg/mL and weak activity in a mouse fibroblast normal cell line (L929) with an IC50 value of 171.06 μg/mL. Glutinous rice vinegar was the most effective vinegar for inhibiting pathogenic bacterial growth of both Gram-negative and Gram-positive bacteria. These results suggested that the value of total phenolic content corresponded to the anticancer activity and antioxidant activity results, while antibacterial activity depended on the acidity of rice vinegar.

scholarly journals Phenolic content, anti-oxidative, anti-α-amylase and anti-α-glucosidase activities of Solanum diphyllum L.

1970 ◽  
Vol 38 (2) ◽  
pp. 139-143 ◽  
Author(s):  
Sheikh Julfikar Hossain ◽  
Magdi A El-Sayed ◽  
Aboul-Hamid H Mohamed ◽  
Mohamed G Sheded ◽  
Hitoshi Aoshima
Keyword(s):  
Phenolic Content ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Total Phenolic ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Stem Extract ◽  
Anti Oxidant ◽  
Dpph Radical Scavenging ◽  
Alpha Glucosidase

Total phenolic content, anti-oxidative, anti-α-amylase and anti-α-glucosidase activities in the powder extracts of fruits, leaves, roots and stems of Solanum diphyllum were determined. Leaf extract had the highest total polyphenol content (68.1 mg GAE/g), followed by stems (48.6 mg GAE/g), fruits (38 mg GAE/g) and roots (26 mg GAE/g). By employing different assays such as DPPH radical scavenging, reducing power, Fe2+ chelating and total anti-oxidant capacity, it was found that leaf and stem extracts had promising anti-oxidative activity. Stem extract had highest level of α-amylase and α-glucosidase inhibition at concentrations of 1.0 and 0.5 mg/ml, respectively. Key words: Anti-oxidant; Anti-α-amylase; Anti-α-glucosidase; Polyphenol; Solanum diphyllum DOI: 10.3329/bjb.v38i2.5138 Bangladesh J. Bot. 38(2): 139-143, 2009 (December)

scholarly journals Studies on Polyphenol Content, Flavonoid Content and Antioxidant Activity of Graviola Tea pulp (Annona muricata L.) from Tien Giang Province, Vietnam

2020 ◽  
Vol 32 (12) ◽  
pp. 3075-3078
Author(s):  
Tran Thi Yen Nhi ◽  
Vo Tan Thanh ◽  
Nguyen Phu Thuong Nhan ◽  
Nguyen Ngoc Quy ◽  
Nguyen Thi Mong Tho ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Sensory Evaluation ◽  
Ethanol Extract ◽  
New Product ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Colour Space ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Phenolic And Flavonoid

Tea is the most commonly consumed beverage worldwide due to promote health and prevention of some human diseases. Soursop tea pulp is one of a new product focused on the values of total ascorbic acid (TAA), total polyphenol content (TPC) and total flavonoid content (TFC). A study using DPPH and ABTS method to detect the maximum of active ingredients in tea simultaneously. Different pulp tea samples with varying dates of production checked for TAA, TPC, TFC, antioxidation and sensory evaluation. There is a difference in TAA between sample (1) and (4), achieved 7.43 ± 0.04 mg/g DM and 12.21 ± 0.04 mg/g DM, respectively. TFC content ranged between 0.13 and 0.18. The phenolics group in tea is high and there are differences between the 3 recent production samples with (1): 3.81 mg QC/g DM fluctuation. In sample 1, the antioxidant activity of the ethanol extract of Soursop was correlated with total phenolic and flavonoid content with values IC50 of 0.26 mgAA/g DM, 2.61 mgAA/g DM for DPPH and ABTS scavenging activity, respectively. Moreover, the Lab* colour space of the soursop tea is measured in the dark area, the L* difference achieved at 30.82 ± 1.24 (2) lowest and the highest 37.42 ± 4.77 (1). Consumer sensory evaluation is performed with results based on a 5-point scale describing: flavour, aroma, colour and favourite.

scholarly journals Behavior of bioactive compounds and antioxidant activity of mango (Azucar cultivar) juice during storage at 4 ºC

2019 ◽  
Vol 72 (1) ◽  
pp. 8743-8750
Author(s):  
María Bibiana Zapata Londoño ◽  
Ana Rosa Ramos Polo ◽  
Andrés Felipe Alzate Arbelaez ◽  
Benjamin Alberto Rojano ◽  
Maria Elena Maldonado Celis
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
High Performance ◽  
Storage Time ◽  
Mangifera Indica ◽  
Ascorbic Acid Content ◽  
Total Phenolic ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Mango Juice

Mango (Mangifera indica L.) is one the fruits that have shown antioxidant activity and high nutritional value. It was evaluated the effect of storage time and temperature on polyphenol content, ascorbic acid and antioxidant activity of mango (cv. Azucar) juice stored up to 64 days at 4 °C. Total polyphenol content was measured by Folin-Ciocalteu method, mangiferin and ascorbic acid were measured by HPLC (High-Performance Liquid Chromatography) and antioxidant activity was measured by ORAC (Oxygen Radical Absorbance Capacity), and ABTS•+ (2,2’-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) method. Total phenolic content decreased after 16 days of juice storage. Ascorbic acid values did not show significant differences until 48 days of storage, and mangiferin content was very similar throughout storage time. The antioxidant activity measured by ORAC method was similar until the end of the storage; however, ABTS value decreased after 32 days of juice storage. In conclusion, storage up to 32 days of mango juice at 4 °C did not alter its antioxidant activity and ascorbic acid content.

scholarly journals Total Polyphenol Content and Antioxidant Capacity of Rosehips of Some Rosa Species

Medicines ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. 84 ◽  
Author(s):  
Noémi Koczka ◽  
Éva Stefanovits-Bányai ◽  
Attila Ombódi
Keyword(s):  
Antioxidant Capacity ◽  
Phenolic Content ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Total Polyphenol Content ◽  
Reducing Ability ◽  
Ethanolic Extracts ◽  
Rosa Species

Background: Rosehips, the fruits of Rosa species, are well known for their various health benefits like strengthening the immune system and treating digestive disorders. Antioxidant, anti-inflammatory, and cell regenerative effects are also among their health enhancing impacts. Rosehips are rich in compounds having antioxidant properties, like vitamin C, carotenoids, and phenolics. Methods: Total polyphenol content (Folin-Ciocalteu’s method), and in vitro total antioxidant capacity (ferric-reducing ability of plasma, FRAP) in rosehips of four Rosa species (R. canina, R. gallica, R. rugosa, R. spinosissima) were determined and compared. Ripe fruits were harvested at two locations. Water and ethanolic extracts of dried fruit flesh were analyzed. Results:R. spinosissima had the highest total phenolic content and antioxidant capacity, significantly higher than the other investigated Rosa species. Both parameters were reported in decreasing order for R. spinosissima > R. canina > R. rugosa > R. gallica. Ethanolic extracts of rosehips showed higher phenolic content and antioxidant activity than water extracts. Antioxidant properties were influenced by the growing site of Rosa species. Conclusions: This study indicates that R. spinosissima exhibited the greatest phenolic and antioxidant content, and therefore can be used as a reliable source of natural antioxidants, and serve as a suitable species for further plant breeding activities. Furthermore, investigations of various Rosa species for their antioxidant properties may draw more attention to their potential as functional foods.

LC-DAD-ESI-MS/MS, total phenolic content, and antioxidant activity of Firmiana simplex

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
MA Ghareeb ◽  
T Mohamed ◽  
AM Saad ◽  
LA Refahy ◽  
MA Sobeh ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Esi Ms

Phytochemical and Pharmacological Activity of Myristica fragrans Houtt (Myristicaceae)

2017 ◽  
Vol 9 (01) ◽  
Author(s):  
Md Arifur Rahman Chowdhury ◽  
Manirujjaman . ◽  
Md Mazedul Haq
Keyword(s):  
Acetic Acid ◽  
Phenolic Content ◽  
Methanolic Extract ◽  
Radical Scavenging ◽  
Antioxidant Property ◽  
Free Radical Scavenging ◽  
Total Phenolic ◽  
Writhing Test ◽  
Myristica Fragrans ◽  
Myristica Fragrans Houtt

Objective: Myristica fragrans Houtt commonly used as traditional medicine for alleviating of various disorders. The purpose of our study was to map out the in vitro antioxidant property and in vivo anti-hyperglycemic and analgesic effect of the methanolic extract of Myristica fragrans Houtt. (Seed and mace) (Myristicaceae) on Swiss albino mice. Methods: The processed powder of Myristica fragrans Houtt (seed and mace) were subjected to methanolic extraction by soxhlet filtration methods, and the desiccated extract was used for screening of antioxidant by DPPH free radical scavenging assessment as well as total phenolic content by using folin-ciocalteu reagent.Anti-hyperglycemic effect and analgesic action tested through alloxan induced antidiabetics test and acetic acid-tempted writhing test on mice. Results: In DPPH free radical scavenging assessment, free radicals neutralization expressed as % of inhibition 49.69±0.06% also by IC50 values as 68.43 µg/ml surmise middle level of antioxidant property. The total phenolic content expressed as 186.25 mg/g equivalent of gallic acid indicates, active phenolic content. Oral administration of 200 and 400 mg/kg of extract dose and reference drug vildagliptin (50 mg/kg) for the duration of the 4-day study period, and initiated % of inhibition the blood glucose level measured as 22.48%, 44.78% and 62.02% regard as the significant anti-hyperglycemic properties. The analgesic activity was investigated by using the acetic acid-induced writhing test in mice, at the dose of 200 mg/kg body and 400mg/kg weight, and resulting 50.4% and 68.10% correspondingly, which was considerably significant with a standard drug. Conclusion: The present study suggests that methanolic extract of seed and mace of Myristica fragrans Houtt can manage moderate oxidative stress as well as perform the painkilling action. Besides, prolong medication may enhance the new dimension of anti-hyperglycemic activity.

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