Effects of maturity stage and storage on cactus berry (Myrtillocactus geometrizans) phenolics, vitamin C, betalains and their antioxidant properties

The study evaluates the effect of two different packaging materials on storage stabililty of and instant fruit-dairy functional beverage mix. Freeze dried Pineapple lassi (PL) powder was packaged in Aluminium Laminated Polyethylene (ALP) and Metallised Polyester (MP). Quality changes at elevated temperature conditions (38±1°C, 33 % relative humidity) were evaluated. Shelf life was calculated to be 44 and 62 days in MP and ALP pouches, respectively. Moisture, water activity, Vitamin C, Lactococci, TBA, colour change and Browning Index were studied in both packaging materials. ALP was found to be better than MP as samples kept in ALP preserved most of the antioxidant properties. The kinetics of Vitamin C degradation was of first order (K=-0.017 , R2= 0.99). Moisture content increased and l<em>actococci </em> count decreased during storage

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Antioxidant compoundsand total antioxidant activity in fruits of acerola from cv. Flor Branca, Florida Sweet and BRS 366

Revista Brasileira de Fruticultura ◽

10.1590/0100-2945-410/13 ◽

2014 ◽

Vol 36 (2) ◽

pp. 294-304 ◽

Cited By ~ 11

Author(s):

Kellina Oliveira de Souza ◽

Carlos Farley Herbster Moura ◽

Edy Sousa de Brito ◽

Maria Raquel Alcântara de Miranda

Keyword(s):

Antioxidant Activity ◽

Vitamin C ◽

Soluble Sugar ◽

Antioxidant Properties ◽

Soluble Solids ◽

Maturity Stage ◽

Activity Levels ◽

Total Antioxidant Activity ◽

Total Soluble Sugar ◽

Total Antioxidant

Information on antioxidant properties at different ontological stages may help producers and food technologists to identify which cultivar and/or maturity stage are most adequate for their need, therefore this work aimed to study the changes in the antioxidant metabolism during acerola development. Fruit from cv. Flor Branca, BRS366 and Florida Sweet were harvested at different stages: immature green colored (I), physiologically mature with green color and maximum size (II), breaker (III) and full red ripe (IV). After harvest, fruits were selected, divided into four replications with 500 g each and evaluated regarding their titratable acidity, pH, soluble solids, total soluble sugar, vitamin C, polyphenol, anthocyanin, yellow flavonoid, total antioxidant activity and antioxidant enzyme activity. Anthocyanin and flavonoid were determined through LC-DAD-ESI/MS and all analysis followed a completely randomized factorial 3 x 4 design. Fruits of 'Florida Sweet' presented significantly higher soluble solids (9.46ºBrix). Vitamin C content decreased during ripening, but ripe 'BRS 366' fruits showed the greatest values (1363 mg.100 g-1) and highest TAA with 42.36 µM TEAC.g-1FW. Cyanidin 3-rhamnoside (520.76 mg.100 g-1 DM) and quercetin 3-rhamnoside (33.72 mg.100 g-1 DM) were the most abundant anthocyanin and yellow flavonoids found mainly in 'Flor Branca' fruit of acerola, whose antioxidant enzymes activities were also higher. Ripe 'Florida Sweet' fruit presents a great potential for fresh consumption, meanwhile physiologically mature 'BRS 366' fruit seems the best option for the bioactive compounds processing industry. As 'Flor Branca' fruit of acerola kept the highest activity levels, it could be an indicative of greater potential for postharvest conservation.

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Effect of Dietary or Supplemental Vitamin C Intake on Vitamin C Levels in Patients with and without Cardiovascular Disease: A Systematic Review

Nutrients ◽

10.3390/nu13072330 ◽

2021 ◽

Vol 13 (7) ◽

pp. 2330

Author(s):

Bianca J. Collins ◽

Mitali S. Mukherjee ◽

Michelle D. Miller ◽

Christopher L. Delaney

Keyword(s):

Systematic Review ◽

Cardiovascular Disease ◽

Vitamin C ◽

Antioxidant Properties ◽

Plasma Vitamin ◽

Healthy Population ◽

Post Intervention ◽

Supplemental Vitamin ◽

Vitamin C Supplementation ◽

Elderly Cohort

Atherosclerosis is a pro-oxidative and pro-inflammatory disease state, which is the underlying cause of most cardiovascular events, estimated to affect 5.2% of the Australian population. Diet, and specifically vitamin C, through its antioxidant properties can play a role in impeding the development and progression of atherosclerosis. This systematic review conducted comprehensive searches in Medline, Emcare, Scopus, PubMed, and Cochrane using key search terms for vitamin C, plasma vitamin C, supplementation, and cardiovascular disease (CVD). The results demonstrated that vitamin C supplementation resulted in a significant increase in vitamin C levels in populations with or without CVD, except for one study on the CVD population. It was also seen that the healthy population baseline and post-intervention vitamin C levels were high compared to the CVD population. However, further research is indicated for CVD population groups with varying baseline vitamin C levels, such as low baseline vitamin C, within a more representative elderly cohort in order to formulate and update vitamin C repletion guidelines.

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Sustainable Processing of Floral Bio-Residues of Saffron (Crocus sativus L.) for Valuable Biorefinery Products

Plants ◽

10.3390/plants10030523 ◽

2021 ◽

Vol 10 (3) ◽

pp. 523

Author(s):

Stefania Stelluti ◽

Matteo Caser ◽

Sonia Demasi ◽

Valentina Scariot

Keyword(s):

Phenolic Compounds ◽

Vitamin C ◽

Antioxidant Properties ◽

Crocus Sativus ◽

Extraction Technique ◽

Ultrasound Assisted Extraction ◽

Average Value ◽

Assisted Extraction ◽

High Yields ◽

Crocus Sativus L

Tepals constitute the most abundant bio-residues of saffron (Crocus sativus L.). As they are a natural source of polyphenols with antioxidant properties, they could be processed to generate valuable biorefinery products for applications in the pharmaceutical, cosmetic, and food industries, becoming a new source of income while reducing bio-waste. Proper storage of by-products is important in biorefining and dehydration is widely used in the herb sector, especially for highly perishable harvested flowers. This study aimed to deepen the phytochemical composition of dried saffron tepals and to investigate whether this was influenced by the extraction technique. In particular, the conventional maceration was compared with the Ultrasound Assisted Extraction (UAE), using different solvents (water and three methanol concentrations, i.e., 20%, 50%, and 80%). Compared to the spice, the dried saffron tepals showed a lower content of total phenolics (average value 1127.94 ± 32.34 mg GAE 100 g−1 DW) and anthocyanins (up to 413.30 ± 137.16 mg G3G 100 g−1 DW), but a higher antioxidant activity, which was measured through the FRAP, ABTS, and DPPH assays. The HPLC-DAD analysis detected some phenolic compounds (i.e., ferulic acid, isoquercitrin, and quercitrin) not previously found in fresh saffron tepals. Vitamin C, already discovered in the spice, was interestingly detected also in dried tepals. Regarding the extraction technique, in most cases, UAE with safer solvents (i.e., water or low percentage of methanol) showed results of phenolic compounds and vitamin C similar to maceration, allowing an improvement in extractions by halving the time. Thus, this study demonstrated that saffron tepals can be dried maintaining their quality and that green extractions can be adopted to obtain high yields of valuable antioxidant phytochemicals, meeting the requirement for a sustainable biorefining.

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Evaluation of the Antioxidant Properties and Aromatic Profile During Maturation of The Blackberry (Rubus glaucus Benth) and The Bilberry (Vaccinium meridionale Swartz)

Revista Facultad Nacional de Agronomía Medellín ◽

10.15446/rfnam.v67n1.42649 ◽

2014 ◽

Vol 67 (1) ◽

pp. 7209-7218 ◽

Cited By ~ 9

Author(s):

Luisa Juana Bernal ◽

Laura Angélica Melo ◽

Consuelo Díaz Moreno

Keyword(s):

Vitamin C ◽

Caffeic Acid ◽

Antioxidant Properties ◽

Statistical Design ◽

Anthocyanin Content ◽

Total Phenols ◽

Degenerative Diseases ◽

Natural Sources ◽

Three Stages ◽

Preventive Role

The blackberry (Rubus glaucus Benth) and the bilberry (Vaccinium meridionale Swartz) are natural sources of antioxidants; they are known for their preventive role against degenerative diseases. In this study, the aromatic profile was evaluated using an electronic nose, including the antioxidant properties and the vitamin C, phenolic and anthocyanin contents during three stages of blackberry and bilberry ripening. A completely random statistical design was followed and the results presented differences in the aromatic profile: a higher anthocyanin content (1.59 mg of cyn-3-glu g-1 in the bilberry and 0.26 mg of cyn-3-glu g-1 in the blackberry) and total phenols (5.57 mg of caffeic acid g-1 bilberry and 2.68 mg caffeic acid g-1 blackberry). The behavior of the evaluated properties was independent in each of the fruits.

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Physicochemical and Bioactive Characteristics of Wild Grown Bilberry (Vaccinium myrtillus L.) Genotypes from Northeastern Turkey

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha46110842 ◽

2018 ◽

Vol 46 (1) ◽

pp. 128-133 ◽

Cited By ~ 4

Author(s):

Ferit CELIK ◽

Mehmet Ramazan BOZHUYUK ◽

Sezai ERCISLI ◽

Muttalip GUNDOGDU

Keyword(s):

Vitamin C ◽

Antioxidant Capacity ◽

Gallic Acid ◽

Antioxidant Properties ◽

Fruit Weight ◽

Total Phenolic ◽

Soluble Solid Content ◽

Anthocyanin Content ◽

Total Anthocyanin ◽

Antioxidant Power

In present study, fruit weight, fruit firmness, external fruit color, soluble solid content, pH, titratable acidity, vitamin C, total phenolics, total anthocyanins, and antioxidant capacity of eight wild bilberry grown in Coruh valley in northeastern Turkey were determined. The blueberry cv. ‘Bluecrop’ is also included study to make comparison with bilberry genotypes. Antioxidant activity of bilberry and blueberry fruits were comparatively assessed by FRAP (Ferric reducing antioxidant power) assay. Significantly higher content of phenolics and anthocyanins was found in bilberry fruits than in blueberry fruits. However blueberry cv. ‘Bluecrop’ exhibited higher fruit weight and vitamin C content than bilberry fruits. Total phenolic and total anthocyanin content was 327 mg gallic acid equivalent and 142 mg of cyanidin-3-glucoside equivalent in 100 g fresh fruit in cv. ‘Bluecrop’ while it was between 492-563 mg gallic acid equaivalent and 307-342 mg of cyanidin-3-glucoside equivalent in 100 g fresh fruits of bilberry accessions. Moreover, wild accessions approximately had 2-3 folds higher antioxidant capacity than cv. ‘Bluecrop’. Results suggest the possibility of improving the bioactive and antioxidant properties of bilberry cultivars based food products by using wild ones in cross breeding. It was also concluded that genotypes significantly affect their bioactive content and consequently the possibility of using wild bilberry fruits as a potential source of natural antioxidants in food industry.

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Antioxidant and antimicrobial activities against Enterobacter cloacae of extracts of Eclipta alba Hassk.

Science and Technology Development Journal ◽

10.32508/stdj.v19i4.599 ◽

2016 ◽

Vol 19 (4) ◽

pp. 76-83

Author(s):

Trang Thi Xuan Dai ◽

Anh Thi Tu Vo

Keyword(s):

Free Radical ◽

Vitamin C ◽

Ethyl Acetate ◽

Ethyl Acetate Extract ◽

Antioxidant Properties ◽

Radical Scavenging ◽

Enterobacter Cloacae ◽

Free Radical Scavenging ◽

Antioxidant Vitamin ◽

Eclipta Alba

This study was subjected to investigate antimicrobial and antioxidant properties of Eclipta alba extracts (methanol, hexane, chloroform and ethyl acetate extracts). The antioxidant property of the extract was assessed by 2,2- diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging method. Kirby-Bauer method was used to determine the antibacterial activity against Enterobacter cloacae of the extracts. The extracts of Eclipta alba were tested against E. cloacae. The highest antibacterial potentiality was exhibited by the ethyl acetate extract of E. alba leaves, means of zones of bacterial growth inhibition are 26.3 mm at a concentration of 32 μg/mL. DPPH free radical scavenging effect of the extracts was compared with standard antioxidant vitamin C. The highest antioxidant activity was exhibited by the ethyl acetate extract of E. alba leaves. The result also showed that the DPPH scavenging activity of ethyl acetate extract from leaves of E. alba was high (EC50 = 419.38 μg/mL). However, this result was 18.99 times lower than that of vitamin C (EC50 = 22.08 μg/mL).

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The influence of selected preservation methods and storage time on the content of antioxidants in blackthorn (Prunus spinosa L.) fruits

Agronomy Science ◽

10.24326/as.2019.1.5 ◽

2019 ◽

Vol 74 (1) ◽

pp. 53-62

Author(s):

KATARZYNA OLESIŃSKA ◽

DANUTA SUGIER ◽

ŁUKASZ SĘCZYK

Keyword(s):

Room Temperature ◽

Storage Time ◽

Antioxidant Properties ◽

Iron Ions ◽

Polyphenol Content ◽

Total Polyphenols ◽

Dried Fruits ◽

Prunus Spinosa ◽

Freeze Dried ◽

And Storage

The aim of the study was to determine the influence of selected methods of preservation and storage time on the content of antioxidants in blackthorn fruit (Prunus spinosa L.). Preserved fruits were stored for 13 and 26 weeks without light at room temperature (freeze-dried and convection dried) and at –20°C (frozen samples). It was shown that both the method of preservation and the storage time had significant influence on the content of polyphenols (anthocyanins, flavonoids, total polyphenols) and antioxidant properties (Fe3+ reduction strength) of blackthorn fruit. As the storage time progressed, the anthocyanins content decreased in all preservation variants. In the case of frozen fruit after 26 weeks of storage, the content of flavonoids (by 12.5%), total polyphenols (by 48%) and the ability to reduce the iron ions were increased (by 55%). In turn, in the dried fruits after this period, the anthocyanins content, the polyphenol content and reduction strength were reduced. The highest values of the parameters evaluated after the assumed storage time has been demonstrated in lyophilizates.

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Comparative account of vitamin C contents, antioxidant properties and iron contents of minor fruits in Sri Lanka

Plant Science Today ◽

10.14719/pst.2021.8.4.1266 ◽

2021 ◽

Vol 8 (4) ◽

Author(s):

Hashini Imalsha Abeysuriya ◽

Vajira P Bulugahapitiya ◽

Loku Pullukkutige Jayatissa

Keyword(s):

Sri Lanka ◽

Vitamin C ◽

Mangifera Indica ◽

Antioxidant Properties ◽

Dehydroascorbic Acid ◽

Psidium Guajava ◽

Sri Lankan ◽

Antioxidant Power ◽

Melastoma Malabathricum ◽

Ic50 Values

Sri Lanka is a habitat of diverse fruit varieties; nevertheless 95% of them are underutilized by people due to unawareness of their nutritional values and health aspects, and hence become ‘minor fruits’. This study was aimed on revealing vitamin C, iron and antioxidant contents of 29 varieties of minor fruits (MFs) with the comparison of the same with three best commonly consumable fruits (CFs), namely Carica papaya, Mangifera indica and Psidium guajava. Ascorbic acid (Asc), dehydroascorbic acid (DAsc), vitamin C (TC), phenolic (TP), flavonoid (TF), iron (Fe) contents and antioxidant capacities (AOCs) of fruits were determined using standard methods. The results of mean Asc, DAsc, TC, TP, TF and Fe contents in 100 gm of MFs ranged from 3.1 to 121.5 mg, 1.2 to 70.7 mg, 6.6 to 136.1 mg, 24.9 to 1613.3 mg Gallic acid equivalent, 6.2 to 228.0 mg Quercetin equivalents and 0.2 to 4.9 mg respectively. DPPH and Ferric Reducing Antioxidant Power (FRAP) assays were used for AOCs and variation of IC50 values in a DPPH assay was 1.2 to 245.4 mg/ml whereas FRAP values ranged from 9.6 to 486.7 ?mol FeSO4/gm. Among the studied minor fruits, Melastoma malabathricum (Maha bovitiya/ Malabar melastome) is found as the best respect to all considered parameters. As a conclusion, it can be stated that, the Sri Lankan minor fruits are good alternatives to the common fruits as they are recognized as good source of vitamin C, iron and higher content of antioxidants. As an outcome, Sri Lankan minor fruits can be promoted as alternatives to common fruits and as source of revenue for national economy.

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