Bioactive Compounds, Vitamin C and Antioxidant Capacities of Fresh and Industrialized Frozen Pulps of Guava (Psidium guajava L.)

2012 ◽  
Vol 2 (3) ◽  
pp. 196-204 ◽  
Author(s):  
Renata Polinati ◽  
Luciana Oliveira ◽  
Eliane Fialho
Keyword(s):  
Vitamin C ◽  
Bioactive Compounds ◽  
Psidium Guajava ◽  
Antioxidant Capacities

scholarly journals PREHARVEST ABIOTIC CONDITIONS ON THE ACCUMULATION OF BIOACTIVE COMPOUNDS AND ANTIOXIDANT CAPACITIES OF SWEET BELL PEPPER (Capsicum annum L) CULTIVARS IN THE LOW AND HIGH VELD REGIONS OF ZIMBABWE

2021 ◽  
Vol 5 (2) ◽  
pp. 67-72
Author(s):  
Anyway Chofamba ◽  
William Makaza ◽  
Bridget Vimbai Masunda
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Bioactive Compounds ◽  
Abiotic Factors ◽  
Bell Pepper ◽  
Total Phenols ◽  
Climatic Regions ◽  
Capsicum Annum ◽  
Antioxidant Capacities

Abiotic factors coupled with varietal differences have a special bearing on the synthesis of bioactive compounds and enhancement of antioxidant capacities of sweet bell pepper. The aim of the present study was to characterize the content of bioactive compounds (lycopene, vitamin C, β-carotenes, total phenols, and the antioxidant activity of sweet bell pepper (Capsicum annum L) grown under different Agro climatic regions with different environmental conditions, the Eastern Highlands (High veld region) and the Save Valley (low veld region). The results from the study showed statistical differences (p ≤ 0.05) between the different growing locations with regard to the bioactive compounds which were identified and quantified. Capsicum annum var. Lafayette presented the highest concentration of vitamin C content, lycopene content and total phenols as well as the greatest antioxidant activity in the high veld region. In addition, the results indicated that low temperatures favour in vivo biosynthesis of bioactive compounds and enhances antioxidant capacities of sweet bell pepper.

scholarly journals Evaluation of chemical characteristics and correlation analysis with pulp browning of advanced selections of apples grown in Brazil

2017 ◽  
Vol 39 (1) ◽  
pp. 103 ◽  
Author(s):  
Luciana Ercoli ◽  
Érica Oliveira Barizão ◽  
Joana Shuelter Boeing ◽  
Marcus Vinícius Kvitschal ◽  
Jesuí Vergilio Visentainer ◽  
...  
Keyword(s):  
Vitamin C ◽  
Antioxidant Capacity ◽  
Phenolic Content ◽  
Titratable Acidity ◽  
Enzymatic Browning ◽  
Total Phenolic ◽  
Chemical Characteristics ◽  
Antioxidant Capacities ◽  
Total Titratable Acidity ◽  
Selection Of

In this research, the total phenolic content (TPC) and antioxidant capacity (FRAP and DPPH•× assays) of pulps and peels of advanced selection of apples grown in Brazil were investigated. The correlation analyses between the activity of polyphenoloxidase enzyme (PPO), vitamin C content, total titratable acidity, and color parameters were performed. The results indicated that the data differed significantly among the apple genotypes studied. The peels of the selection Epagri 170-91 and Epagri 170-25 showed the highest TPC and antioxidant capacities. In addition, the pulps of the Epagri 170-91 presented the highest TPC and antioxidant capacities, the lowest enzymatic browning, highest amount of vitamin C and lowest enzymatic activity when compared with other genotypes. The TPC and antioxidant capacities were significantly correlated in all genotypes analyzed. High correlation values between enzymatic browning and factors that affect the apple color were also found in all analyzed pulps, except between enzymatic browning and TPC. The results demonstrated that the enzymatic browning and TPC, as well as the antioxidant capacity and chemical characteristics, vary considerably depending on the apple genotypes and fruit tissues analyzed. 

scholarly journals The Use of a Micro Near Infrared Portable Instrument to Predict Bioactive Compounds in a Wild Harvested Fruit—Kakadu Plum (Terminalia ferdinandiana)

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1413
Author(s):  
Eshetu Bobasa ◽  
Anh Dao T. Phan ◽  
Michael Netzel ◽  
Heather E. Smyth ◽  
Yasmina Sultanbawa ◽  
...  
Keyword(s):  
Vitamin C ◽  
Bioactive Compounds ◽  
Ellagic Acid ◽  
Near Infrared ◽  
Wide Range ◽  
Fruit Samples ◽  
Nutritional Characteristics ◽  
Analytical Quantification ◽  
Kakadu Plum ◽  
Terminalia Ferdinandiana

Kakadu plum (KP; Terminalia ferdinandiana Exell, Combretaceae) is an emergent indigenous fruit originating from Northern Australia, with valuable health and nutritional characteristics and properties (e.g., high levels of vitamin C and ellagic acid). In recent years, the utilization of handheld NIR instruments has allowed for the in situ quantification of a wide range of bioactive compounds in fruit and vegetables. The objective of this study was to evaluate the ability of a handheld NIR spectrophotometer to measure vitamin C and ellagic acid in wild harvested KP fruit samples. Whole and pureed fruit samples were collected from two locations in the Kimberley region (Western Australia, Australia) and were analysed using both reference and NIR methods. The standard error in cross validation (SECV) and the residual predictive deviation (RPD) values were 1.81% dry matter (DM) with an RPD of 2.1, and 3.8 mg g−1 DM with an RPD of 1.9 for the prediction of vitamin C and ellagic acid, respectively, in whole KP fruit. The SECV and RPD values were 1.73% DM with an RPD of 2.2, and 5.6 mg g−1 DM with an RPD of 1.3 for the prediction of vitamin C and ellagic acid, respectively, in powdered KP samples. The results of this study demonstrated the ability of a handheld NIR instrument to predict vitamin C and ellagic acid in whole and pureed KP fruit samples. Although the RPD values obtained were not considered adequate to quantify these bioactive compounds (e.g., analytical quantification), this technique can be used as a rapid tool to screen vitamin C in KP fruit samples for high and low quality vitamin C.

scholarly journals Comparison of the Phytochemical Properties, Antioxidant Activity and Cytotoxic Effect on HepG2 Cells in Mongolian and Taiwanese Rhubarb Species

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1217
Author(s):  
Ganbolor Jargalsaikhan ◽  
Jin-Yi Wu ◽  
Yen-Chou Chen ◽  
Ling-Ling Yang ◽  
Ming-Shun Wu
Keyword(s):  
Liver Cancer ◽  
Bioactive Compounds ◽  
Cytotoxic Effect ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Ethanol Extract ◽  
Parp Cleavage ◽  
Total Phenolic ◽  
Antioxidant Capacities ◽  
Phytochemical Contents

The Mongolian rhubarb—Rheum undulatum L. (RU)—and Rumex crispus L. (RC)—a Taiwanese local rhubarb belonging to the family of Polygonaceae—are principal therapeutic materials in integrative medicine due to their rich quantities of bioactive compounds; however, their phytochemical and antioxidant properties, and anti-cancer activity is poorly investigated. Furthermore, the phytochemical characteristics of both species may be affected by their different geographical distribution and climatic variance. The current study aimed to compare RU with RC extracts in different polarity solvents (n-hexane, ethyl acetate, acetone, ethanol, and water) for their phytochemical contents including the total phenolic content (TPC), total anthraquinone content (TAC), total flavonoid content (TFC), antioxidant and free radical scavenging capacities, and anticancer ability on the HepG2 cell. Except for the n-hexane extract, all of the RU extracts had considerably higher TPCs than RC extracts, ranging from 8.39 to 11.16 mg gallic acid equivalent (GAE) per gram of dry weight, and the TPCs of each extract were also significantly correlated with their antioxidant capacities by ABTS, DPPH, and FRAP assays (p < 0.05). Moreover, there was no remarkable association between the antioxidant capacities and either TACs or TFCs in both the RU and RC extracts. Besides, high-performance liquid chromatography (HPLC) analysis revealed that both the RU and RC extracts contained chrysophanol, emodin, and physcion, and those bioactive compounds were relatively higher in the n-hexane solvent extracts. Additionally, we observed different levels of dose-dependent cytotoxic effects in all the extracts by cell viability assay. Notably, the ethanol extract of RU had a compelling cytotoxic effect with the lowest half-maximum inhibition concentration (IC50-171.94 ± 6.56 µg/mL at 48 h) among the RU extracts than the ethanol extract of RC. Interestingly, the ethanol extract of RU but not RC significantly induced apoptosis in the human liver cancer cell line, HepG2, with a distinct pattern in caspase-3 activation, resulting in increased PARP cleavage and DNA damage. In summary, Mongolian Rhubarb, RU, showed more phytochemical contents, as well as a higher antioxidant capacity and apoptotic effect to HepG2 than RC; thus, it can be exploited for the proper source of natural antioxidants and liver cancer treatment in further investigation.

scholarly journals Bioactive Compounds, Antioxidant, and Antibacterial Properties of Lonicera caerulea Berries: Evaluation of 11 Cultivars

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 624
Author(s):  
Laima Česonienė ◽  
Juozas Labokas ◽  
Ina Jasutienė ◽  
Antanas Šarkinas ◽  
Vilma Kaškonienė ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Vitamin C ◽  
Organic Acids ◽  
Bioactive Compounds ◽  
Total Phenolic ◽  
Aqueous Extracts ◽  
Lonicera Caerulea ◽  
Phenolic Contents ◽  
Total Phenolic Contents ◽  
Ethanolic Extracts

The aim of the study was to evaluate 11 cultivars of blue honeysuckle (Lonicera caerulea L.) for bioactive compounds, antioxidant capacity, and the antibacterial activity of berries. Total phenolic contents (TPCs) and total anthocyanin contents (TACs) were established by using ethanolic extracts. For contents of organic acids and saccharides, aqueous extracts were used, and vitamin C was determined by using oxalic acid solution. DPPH• radical scavenging capacity was evaluated by using ethanolic extracts; antibacterial activity was assessed by using both ethanolic and aqueous extracts. The TPC varied from 364.02 ± 0.41 mg/100 g in ‘Vostorg’ to 784.5 ± 0.3 mg/100 g in ‘Obilnaja’, and TAC ranged from 277.8 ± 1.1 mg/100 g in ‘Čelnočnaja’ to 394.1 ± 8.4 mg/100 g in ‘Nimfa’. Anthocyanins comprised 53.8% of total phenolic contents on average. Among organic acids, citric acid was predominant, averaging 769.41 ± 5.34 mg/100 g, with malic and quinic acids amounting to 289.90 ± 2.64 and 45.00 ± 0.37 mg/100 g on average, respectively. Contents of vitamin C were 34.26 ± 0.25 mg/100 g on average. Organic acids were most effective in the inhibition of both Gram-positive and Gram-negative bacteria tested. In conclusion, berries of L. caerulea are beneficial not only for fresh consumption, but also as a raw material or ingredients of foods with high health-promoting value.

scholarly journals Effect of Adding Resistant Maltodextrin to Pasteurized Orange Juice on Bioactive Compounds and Their Bioaccessibility

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1198
Author(s):  
Elías Arilla ◽  
Purificación García-Segovia ◽  
Javier Martínez-Monzó ◽  
Pilar Codoñer-Franch ◽  
Marta Igual
Keyword(s):  
Vitamin C ◽  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Orange Juice ◽  
Control Sample ◽  
Water Soluble ◽  
In Vitro Digestibility ◽  
Total Phenols ◽  
Resistant Maltodextrin

Resistant maltodextrin (RMD) is a water-soluble and fermentable functional fiber. RMD is a satiating prebiotic, reducer of glucose and triglycerides in the blood, and promoter of good gut health, and its addition to food is increasingly frequent. Therefore, it is necessary to study its potential effects on intrinsic bioactive compounds of food and their bioaccessibility. The aim of this study was to evaluate the effect of adding RMD on the bioactive compounds of pasteurized orange juice with and without pulp, and the bioaccessibility of such compounds. RMD was added at different concentrations: 0 (control sample), 2.5%, 5%, and 7.5%. Ascorbic acid (AA) and vitamin C were analyzed using HPLC, whereas total phenols, total carotenoids (TC), and antioxidant capacity were measured using spectrophotometry. After that, sample in vitro digestibility was assessed using the standardized static in vitro digestion method. The control orange juice with pulp presented significantly higher values of bioactive compounds and antioxidant capacity than the control orange juice without pulp (p < 0.05). RMD addition before the juice pasteurization process significantly protected all bioactive compounds, namely total phenols, TC, AA, and vitamin C, as well as the antioxidant capacity (AC) (p < 0.05). Moreover, this bioactive compound protective effect was higher when higher RMD concentrations were added. However, RMD addition improved phenols and vitamin C bioaccessibility but decreased TC and AA bioaccessibility. Therefore, the AC value of samples after gastrointestinal digestion was slightly decreased by RMD addition. Moreover, orange pulp presence decreased total phenols and TC bioaccessibility but increased AA and vitamin C bioaccessibility.

scholarly journals Impact of High-Pressure Homogenization Parameters on Physicochemical Characteristics, Bioactive Compounds Content, and Antioxidant Capacity of Blackcurrant Juice

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1802
Author(s):  
Bartosz Kruszewski ◽  
Katarzyna Zawada ◽  
Piotr Karpiński
Keyword(s):  
High Pressure ◽  
Vitamin C ◽  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Titratable Acidity ◽  
Physicochemical Characteristics ◽  
Food Preservation ◽  
Inlet Temperature ◽  
High Pressure Homogenization

High-pressure homogenization (HPH) is one of the food-processing methods being tested for use in food preservation as an alternative to pasteurization. The effects of the HPH process on food can vary depending on the process parameters used and product characteristics. The study aimed to investigate the effect of pressure, the number of passes, and the inlet temperature of HPH processing on the quality of cloudy blackcurrant juice as an example of food rich in bioactive compounds. For this purpose, the HPH treatment (pressure of 50, 150, and 220 MPa; one, three, and five passes; inlet temperature at 4 and 20 °C) and the pasteurization of the juice were performed. Titratable acidity, pH, turbidity, anthocyanin, vitamin C, and total phenolics content, as well as colour, and antioxidant activity were measured. Heat treatment significantly decreased the quality of the juice. For processing of the juice, the best were the combinations of the following: one pass, the inlet temperature of 4 °C, any of the used pressures (50, 150, and 220 MPa); and one pass, the inlet temperature of 20 °C, and the pressure of 150 MPa. Vitamin C and anthocyanin degradation have been reported during the HPH. The multiple passes of the juice through the machine were only beneficial in increasing the antioxidant capacity but negatively affected the colour stability.

scholarly journals Ultra-High Temperature Effect on Bioactive Compounds and Sensory Attributes of Orange Juice Compared with Traditional Processing

2017 ◽  
Vol 71 (6) ◽  
pp. 486-491
Author(s):  
Gaļina Zvaigzne ◽  
Daina Kārkliņa ◽  
Joerg-Thomas Moersel ◽  
Sasha Kuehn ◽  
Inta Krasnova ◽  
...  
Keyword(s):  
High Temperature ◽  
Vitamin C ◽  
Bioactive Compounds ◽  
Orange Juice ◽  
Sensory Attributes ◽  
Heat Treated ◽  
C 30 ◽  
Traditional Processing ◽  
The Impact ◽  
Ultra High Temperature

Abstract Orange juices are an important source of bioactive compounds. Because of its unique combination of sensory attributes and nutritional value, orange juice is the world’s most popular fruit juice. Orange (Citrus sinensis) juice of Greek Navel variety was used in this study. The impact of Conventional Thermal Pasteurisation (94 °C/30') (CTP) and alternative Ultra-High Temperature (UHT) (130 °C/2') processing on bioactive compounds and antioxidant capacity changes of fresh Navel orange juice was investigated. Sensory attributes of processed juices were evaluated. Results showed that using technologies CTP and UHT orange juice Navel significantly changed vitamin C concentration in comparison with fresh orange juice. The highest concentration of antioxidants (vitamin C, total phenols, hesperidin and carotenoids) was observed in orange juice Navel produced by UHT technology. Sensory results indicated that characteristics of the orange juice obtained using UHT technology were more liked than the CTP heat treated juice. UHT technology emerges as an advantageous alternative process to preserve bioactive compounds in orange juice.

scholarly journals UJI AKTIVITAS ANTIOKSIDAN DARI EKSTRAK ETANOL SPONS Ianthella basta DARI DESA TUMBAK KECAMATAN PUSOMAEN KABUPATEN MINAHASA TENGGARA

PHARMACON ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 713
Author(s):  
Nurhati Anton ◽  
Adithya Yudistira ◽  
Jainer Pasca Siampa
Keyword(s):  
Antioxidant Activity ◽  
Coral Reef ◽  
Vitamin C ◽  
Bioactive Compounds ◽  
Ethanol Extract ◽  
Positive Control ◽  
Terrestrial Plants ◽  
Dpph Method ◽  
Ethanol Extracts

ABSTRACT Sponges are a component of coral reef biota that has bioactive compounds with a greater percentage of activity compared to compounds produced by terrestrial plants. This study aims to determine the presence of antioxidant activity in the ethanol extracts of sponge Ianthella basta from the waters of Tumbak Village. Ianthella basta sponge was extracted using maceration method with 96% ethanol solvent. Antioxidant activity testing was carried out using the DPPH method with a concentration of 100 µg / mL, 75 μg / mL, 50 μg / mL, and 25 μg / mL and Vitamin C p.a as positive control. Each sample was made three repetitions of the test. Testing using a UV-Vis spectrophotometer. The results showed that the ethanol extract of the Ianthella basta sponge had antioxidant activity with a percentage of 48.73% at a concentration of 100 µg / mL. Keywords: Ianthella basta sponge, Antioxidants, Extraction, DPPH  ABSTRAK Spons merupakan salah satu komponen biota penyusun terumbu karang yang mempunyai senyawa bioaktif dengan persentase keaktifan lebih besar dibandingkan dengan senyawa-senyawa yang dihasilkan oleh tumbuhan darat. Penelitian ini bertujuan untuk mengetahui adanya aktivitas antioksidan di dalam ekstrak etanol Spons Ianthella basta dari perairan Desa Tumbak. Spons Ianthella basta diekstraksi menggunakan metode maserasi dengan pelarut etanol 96%. Pengujian aktivitas antioksidan dilakukan dengan menggunakan metode DPPH dengan konsentrasi 100 µg/mL, 75 µg/mL, 50 µg/mL, dan 25 µg/mL dan Vitamin C p.a sebagai kontrol positif. Masing-masing sampel dibuat tiga kali pengulangan uji. Pengujian menggunakan alat spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa ektrak etanol Spons Ianthella basta memiliki aktivitas antioksidan dengan persentase sebesar 48,73% pada konsentrasi 100 µg/mL. Kata Kunci: Spons Ianthella basta, Antioksidan, Ekstraksi, DPPH

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

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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