Fruit Antioxidant Activity, Ascorbic Acid, Total Phenol, Quercetin, and Carotene of Irwin Mango Fruits Stored at Low Temperature after High Electric Field Pretreatment

2004 ◽  
Vol 52 (5) ◽  
pp. 1281-1286 ◽  
Author(s):  
K. S. Shivashankara ◽  
Seiichiro Isobe ◽  
Muhammad Imran Al-Haq ◽  
Makiko Takenaka ◽  
Takeo Shiina
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Low Temperature ◽  
Electric Field ◽  
High Electric Field ◽  
Total Phenol

scholarly journals Ascorbic Acid, Total Phenol Content and Antioxidant Activity of Fresh Juices of Four Ripe and Unripe Citrus Fruits

2012 ◽  
Vol 1 (2) ◽  
pp. 303-310 ◽  
Author(s):  
C. REKHA ◽  
G. POORNIMA ◽  
M. MANASA ◽  
V. ABHIPSA ◽  
J. PAVITHRA DEVI ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Total Phenol ◽  
Total Phenol Content ◽  
Citrus Fruits ◽  
Phenol Content

scholarly journals The Content of Chlorophyll, and Antioxidant Activity of Malabar plum (Syzygium jambos) Leaves at Different Developmental Stages

2019 ◽  
Vol 11 (2) ◽  
pp. 226-233
Author(s):  
Ikhsanti Maliya ◽  
Sri Darmanti ◽  
Sri Widodo Agung Suedy
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Developmental Stages ◽  
Ascorbic Acid Content ◽  
Total Phenol ◽  
Color Measurement ◽  
Total Phenol Content ◽  
Chlorophyll Contents ◽  
Syzygium Jambos ◽  
Dpph Method

Malabar plum [Syzygium jambos (L.) Alston.] is a tropical plant which is used as a medicinal plant, because it contains secondary metabolites, especially in the leaves. The different leaves developmental stages can affect physiological changes, especially metabolic processes, so it is suspected to affect the antioxidant content and activity. The objective of this research was to study the difference of leaves morphology, chlorophyll contents, antioxidant contents, and activity at the different leaves developmental stages. Samples were taken from Kaliboto Village, Purworejo, Central Java. The leaf color measurement was using colorimetry; determination of chlorophyll, carotenoids, ascorbic acid, and total phenol content is was using spectrophotometry; and antioxidant activity was using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. Qualitative data were analyzed descriptively, while quantitative data were analyzed by ANOVA tests. The results showed that the higher level of leaves development, the higher pigment content, total phenol, and antioxidant activity ascorbic acid content in the mature leaves is lower when compared to the young and old leaves. The results of this research provide the information that can support the use of Malabar plum leaves in traditional medicinal activity and pharmaceutical industry, as well as basic information for plant breeding.

scholarly journals Evaluation of Antioxidant Activity and Cytotoxic Property of Methanolic Extract of Flemingia macrophylla (Willd.)

2015 ◽  
Vol 16 (2) ◽  
pp. 159-163
Author(s):  
Anjuman Ara Begum ◽  
Md Mosiul Haque ◽  
Mahfuzul Islam ◽  
Sukalyan Kumar Kundu
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Methanolic Extract ◽  
Total Phenol ◽  
Total Flavonoid ◽  
Flemingia Macrophylla ◽  
Total Antioxidant ◽  
Stem Extract

Flemingia macrophylla locally known as ‘Charchara’ in Bangladesh is a medicinal herb. Being a member of the Fabaceae family it claims a number of medicinal uses including hypoglycemic activity, neuroprotective effect and gynecological remedies. Methanolic extract of F. macrophylla was investigated to evaluate its antioxidant and general toxic properties in this study. Antioxidant potential was evaluated using total antioxidant capacity, total phenol contents, total flavonoid contents and DPPH (1,1-diphenyl-2-picrylhydrazyl) assays. Both leaf and stem extracts of F. macrophylla were found to possess significant amount of phenolics and flavonoids, expressed as gallic acid equivalents (GAE) and quercetin equivalent (QE), respectively. Interestingly total phenol content was equal for both leaf and stem extract and it was 43.8 mg GAE/g. Total flavonoid content was found to be 64.4 and 39.1 mg QE/g for leaf and stem extract, respectively. The total antioxidant capacity was expressed as ascorbic acid equivalents (AAE) and for leaf it was 5.067 mg/gm AAE and for stem 0.8167 mg/gm AAE. DPPH scavenging activity was determined by comparing with ascorbic acid. The IC50 values were 19.95, 125.89 and 707.94 ?g/ml for ascorbic acid, leaf and stem extract, respectively. The results of the present study on methanolic extracts of F. macrophylla revealed the presence of moderate antioxidant activity and extract of leaves produced better results than stem of the plant. In brine shrimp lethality bioassay, methanolic extract of F. macrophylla exhibited insignificant cytotoxicity. DOI: http://dx.doi.org/10.3329/bpj.v16i2.22298 Bangladesh Pharmaceutical Journal 16(2): 159-163, 2013

scholarly journals Genetic diversity and inter-relationships of fruit bio-chemicals and antioxidant activity in Iranian wild blackberry species

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Mehdi Garazhian ◽  
Ali Gharaghani ◽  
Saeid Eshghi
Keyword(s):  
Cluster Analysis ◽  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Correlation Analysis ◽  
Rich Source ◽  
Total Phenol ◽  
Breeding Programs ◽  
Berry Weight ◽  
Significant Difference ◽  
Almost All

Abstract Blackberries are a rich source of bio-chemicals such as anthocyanins and polyphenolic antioxidants. The evaluation of the extent of variation among wild genetic resources can provide useful information for the establishment of effective conservation strategies and future breeding programs. In this study, variations and inter-relationship of berry weight, total phenol (TP), total soluble solids (TSS), titratable acidity (TA), ascorbic acid (AA), anthocyanin and antioxidant activity were estimated in their values among 57 accessions belonging to 4 different Rubus spp. native to Iran. The experiments were performed during two consecutive years (2014 and 2015). Combine analysis showed that there is no significant difference between the data of 2 years in all measured traits. High or very high levels of variations were detected in berry weight (0.14–1.30 g), antioxidant activity (40.21–88.08%), anthocyanin (80.74–145.09 mg/100 g), TSS (7.9–17.8 °Brix), TA (0.36–0.83%) and AA (9.56–20.92 mg/100 g). This is while TP showed very low levels of variation (109.5–129.1 mg/100 g). Correlation analysis showed that antioxidant activity correlated highly and positively with all of the measured characteristics including ascorbic acid (r = 0.927), anthocyanin (r = 0.752), total phenol (r = 0.681), TSS (r = 0.473) and berry weight (r = 0.541) except for TA. Cluster analysis based on all measured characteristics showed a partial differentiation between the accessions based on their species and, to lesser extent, according to their origin within the main clusters. Based on the bi-plot of the first two PCAs, genotypes and traits classified into four quadrants. This grouping was in agreement with that of cluster analysis, considering the fact that almost all of accessions in quadrants II and III (with a few exceptions) were same to those in the first clade of cluster analysis and the genotypes grouped in quadrants I and IV, represents the accessions of clade 2 in cluster analysis. The projection of the traits vectors in PCA were also fully in accordance to that of correlation analysis in almost all of studied traits. Results showed that a rich source of variations is available considering berry weight, fruit bio-chemical and antioxidant activity in the Iranian wild Rubus species, which needs immediate conservation and worth to be utilized in commercial breeding programs.

scholarly journals Contents of constituents and antioxidant activity of seed and pulp extracts of Annona coriacea and Annona sylvatica

2015 ◽  
Vol 75 (3) ◽  
pp. 685-691 ◽  
Author(s):  
RSR. Benites ◽  
ASN. Formagio ◽  
EJS. Argandoña ◽  
CRF. Volobuff ◽  
LNF. Trevizan ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Free Radical ◽  
Radical Scavenging Activity ◽  
Condensed Tannin ◽  
Radical Scavenging ◽  
Total Phenol ◽  
Extract Content ◽  
Bleaching Test ◽  
Β Carotene

AbstractThe antioxidant potential of fruit pulp and seeds of extracts of the Annona coriacea, and A. sylvatica(Annonaceae) were investigated, as well contents total phenolics, flavonoids, condensed tannins and ascorbic acid. Was used to determine the antioxidant activity the 1,1-diphenyl-1-picrylhydrazyl free radical (DPPH), β-carotene bleaching and ABTS radical cation method. The total phenol, total flavonoid, condensed tannin, and ascorbic acid contents were measured spectrophotometrically. In this study, the pulp and seeds of the fruits were extracted using methanol/water (8:2) for maceration. The seed extracts of A. coriacea demonstrated a moderate antioxidant effect with free radical scavenging activity of 31.53%, by the DPPH test, 51.59% by the β-carotene bleaching test and 159.50 µM trolx/g of extract in the ABTS assay. We found that the hydromethanolic seed extract of A. coriacea had high total phenol (147.08 ± 4.20 mg of GAE/g of extract) and flavonoid (131.18 ± 2.31 mg of QE/g of extract) content. This indicated that the antioxidant activity of the extracts was related to the contents of these constituents.

scholarly journals ANTIOXIDANT ACTIVITY OF POMEGRANATE

2021 ◽  
Vol 52 (1) ◽  
pp. 196-203
Author(s):  
Lazeeza S. O.
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Acid Content ◽  
Antioxidant Properties ◽  
Ascorbic Acid Content ◽  
Power Reduction ◽  
Total Phenol ◽  
Total Flavonoid ◽  
Oxygen Species ◽  
Antioxidant Power

Natural fruits antioxidants play a significant role in inhibiting reactive oxygen species and scavenging free radicals, thus avoiding chronic, degenerative diseases such as cardiovascular disease, aging, cholesterol rates and cancer. The study covered six categories of each three tastes of different pomegranate fruits obtained or purchased in Erbil/Kurdistan-Iraq, a total of 54 samples (6x3x3) were analyzed. Each type was tested for ferric reduction of antioxidant power assay, reduced power method, ascorbic acid content, total phenol and total flavonoid. Our results have shown that the Sour Smilan cultivar has the highest antioxidant properties, ferric antioxidant power reduction (536.89±14.65), ferric power reduction (0.965), ascorbic acid content (0.252±0.012), total phenol (139.66±3.49), total flavonoid (23.08±2.23), and short comparative studies have been conducted to analyze the amount of iron (11) in pomegranate in order to analyze their interferences to the antioxidant activity reported in the ferric reduction of antioxidant power assay.

scholarly journals Determination of Biochemical Contents of Fresh, Oven-Dried, and Sun-Dried Peels and Pulps of Five Apple Cultivars (Amasya, Braeburn, Golden Delicious, Granny Smith, and Starking)

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Zeynep Ergün
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Malic Acid ◽  
Total Phenol ◽  
Total Flavonoid ◽  
Soluble Solids ◽  
Food Storage ◽  
Total Phenolic ◽  
Golden Delicious ◽  
Apple Cultivars

This study aimed to investigate the biochemical compounds of five different apple cultivars (Amasya, Braeburn, Golden Delicious, Granny Smith, and Starking) grown in the same location and to reveal the differences between peel and pulp in the fresh, oven-dried, and sun-dried samples. Sugar and organic acid contents were analyzed through high-performance liquid chromatography. Besides, antioxidant activity, total flavonoid, and total phenolic contents were analyzed with a spectrophotometer. The results of these analyses showed that the compounds varied between peel and pulp and among fresh, oven-dried, and sun-dried samples. The largest level of total flavonoid was found in Amasya oven-dried peel, and the largest total phenol, antioxidant activity, fructose, and total sugar levels were observed in Amasya sun-dried peel. Moreover, the largest L-ascorbic acid was detected in Amasya oven-dried pulp. Granny Smith oven-dried pulp was rich in citric, succinic acids, and glucose. Braeburn sun-dried pulp, Golden Delicious oven-dried pulp, and Granny Smith sun-dried pulp contained the largest sucrose, malic acid, and total soluble solids levels, respectively. For data interpretation, t-test, ANOVA, Duncan’s test, Kruskal–Wallis H test, and principal component analysis were performed. The peel contained significantly higher total flavonoid, total phenol, and antioxidant activity than pulp. Moreover, among fresh, oven-dried, and sun-dried samples, total phenol, succinic acid, malic acid, and L-ascorbic acid significantly differed. As a whole, the pulp was rich in sugars. The results provide valuable information on the food quality parameters of five different apple cultivars. It was demonstrated that consuming apple with its peel is healthier (in terms of total flavonoid, total phenol, antioxidant activity parameters, and L-ascorbic acid), and drying (especially the sun-drying method) is an effective food storage method for apples.

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