Antioxidant capacities of Bacillus endophyticus ST-1 and Ketogulonicigenium vulgare 25B-1 in vitamin C fermentation

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.

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Reconstruction and analysis of a genome-scale metabolic model of the vitamin C producing industrial strain Ketogulonicigenium vulgare WSH-001

Journal of Biotechnology ◽

10.1016/j.jbiotec.2012.05.015 ◽

2012 ◽

Vol 161 (1) ◽

pp. 42-48 ◽

Cited By ~ 27

Author(s):

Wei Zou ◽

Liming Liu ◽

Jing Zhang ◽

Haoru Yang ◽

Maoda Zhou ◽

...

Keyword(s):

Vitamin C ◽

Metabolic Model ◽

Industrial Strain ◽

Ketogulonicigenium Vulgare ◽

A Genome ◽

Genome Scale

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Impact of Germination Time on Resveratrol, Phenolic Acids, and Antioxidant Capacities of Different Varieties of Peanut (Arachis hypogaea Linn.) from China

Antioxidants ◽

10.3390/antiox10111714 ◽

2021 ◽

Vol 10 (11) ◽

pp. 1714

Author(s):

Ziying Zhou ◽

Zhili Fan ◽

Maninder Meenu ◽

Baojun Xu

Keyword(s):

Vitamin C ◽

Phenolic Acids ◽

Total Phenolic ◽

Anthocyanin Content ◽

Phenolic Profile ◽

Antioxidant Power ◽

Germination Time ◽

Antioxidant Capacities ◽

Ferric Reducing Antioxidant Power ◽

Highly Correlated

In China, peanut sprouts are popular among consumers as functional vegetables. This study reports the change in total phenolic content (TPC), total flavonoid content (TFC), monomeric anthocyanin content (MAC), vitamin C, trans-resveratrol content, antioxidant capacities, and phenolic profile of three different varieties of peanut during 8 days of germination. The TPC, TFC, and antioxidant capacity of peanut samples were reduced and then increased with an increase in germination time. TFC values were highly correlated with 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) values. MAC values of peanuts were first increased and then decreased during 8 days of germination. The TFC, DPPH, and FRAP values of germinated peanuts were lower compared to the non-germinated peanut. Germination of peanut samples enhanced the total phenolic acids and trans-resveratrol content, but the vitamin C content of peanut sprouts was lower than ungerminated peanuts.

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Complete Genome Sequence of the Industrial Bacterium Ketogulonicigenium vulgare SKV

Genome Announcements ◽

10.1128/genomea.01426-16 ◽

2016 ◽

Vol 4 (6) ◽

Cited By ~ 1

Author(s):

Nan Jia ◽

Ming-Zhu Ding ◽

Yu-Zhang Du ◽

Shuai Feng ◽

Feng Gao ◽

...

Keyword(s):

Vitamin C ◽

Genome Sequence ◽

Complete Genome Sequence ◽

Complete Genome ◽

Ketogulonicigenium Vulgare

Ketogulonicigenium vulgare has been widely used in vitamin C two-step fermentation, which converts l -sorbose to 2-keto- l -gluonic acid. Here, the complete genome of K. vulgare SKV, which performs better fermentation production than K. vulgare Hbe602, is deciphered to understand the key differences in metabolism between K. vulgare strains SKV and Hbe602.

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Complete Genome Sequence of the Industrial Strain Bacillus megaterium WSH-002

Journal of Bacteriology ◽

10.1128/jb.06066-11 ◽

2011 ◽

Vol 193 (22) ◽

pp. 6389-6390 ◽

Cited By ~ 35

Author(s):

Liming Liu ◽

Yang Li ◽

Jing Zhang ◽

Wei Zou ◽

Zhemin Zhou ◽

...

Keyword(s):

Vitamin C ◽

Genome Sequence ◽

Bacillus Megaterium ◽

Complete Genome Sequence ◽

Protein Production ◽

Industrial Strain ◽

High Quality ◽

Content Type ◽

Ketogulonicigenium Vulgare ◽

High Quality Genome

Bacillus megaterium, an industrial strain, has been widely used in protein production and the vitamin C industry. Here we reported a finished, annotated, and compared 4.14-Mbp high-quality genome sequence ofB. megateriumWSH-002, which is the companion strain forKetogulonicigenium vulgarein the vitamin C industry and is stocked in our laboratory.

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Comparison of Radical Scavenging Capacities of Eleven Sargassum Species Grown off the Korean Coast (P06-082-19)

Current Developments in Nutrition ◽

10.1093/cdn/nzz031.p06-082-19 ◽

2019 ◽

Vol 3 (Supplement_1) ◽

Author(s):

Su-Hyeon Baek ◽

Seung-Jin Jeong ◽

Chai-Hyeon Lee ◽

Hyeung-Rak Kim ◽

Bohkyung Kim ◽

...

Keyword(s):

Vitamin C ◽

Antioxidant Capacity ◽

Superoxide Radical ◽

Radical Scavenging ◽

Dpph Radical ◽

Radical Scavenging Capacity ◽

Antioxidant Capacities ◽

Scavenging Capacity ◽

Radical Generation ◽

Dpph Radical Scavenging

Abstract Objectives Sargassum (S) species, a marine brown alga consumed in Asian countries, have various health benefits, such as improving the conditions of cardiovascular disease, osteoarthritis, and hypopigmentation. And these benefits are associated with their strong antioxidant capacities. However, antioxidant capacities of S. species have not been thoroughly explored and compared. Therefore, the purpose of this study was to compare the antioxidant capacities of eleven S. species grown off the Korean coast. Methods Ethanol extracts of eleven S. Species (S. hemiphyllum, S. coreanum, S. horneri, S. Confusum, S. siliquastrum, S. miyabei, S. Serratifolium, S. filicinum, S. Micracanthum, S. macrocarpum, and S. yendoi) provided by National Marine Biodiversity Institute of Korea were evaporated. The powdered samples were dissolved in 80% methanol as 100 mg/L to measure ABTS, DPPH, and superoxide radical scavenging activities. For the ABTS and DPPH radical scavenging capacities, the antioxidant capacities were expressed as mg vitamin C equivalent antioxidant capacity (VCEAC)/100 mg. For the superoxide radical scavenging capacity, inhibition rate of superoxide radical generation (%) was calculated. Results Among eleven species, four showed notable radical scavenging capacities including S. miyabei, S. hemiphyllum, S. filicinum, and S. serratifolium. For DPPH radical scavenging capacity, S. miyabei showed the greatest antioxidant capacity (193.6 mg VCEAC/100 mg) followed by S. hemiphyllum, (137.9), S. filicinum (78.2), and S. serratifolium (75.4). For ABTS radical scavenging capacity, S. hemiphyllum showed the greatest capacity as 205.7 mg VCEAC/100 mg followed by S. miyabei (186.2), S. filicinum (140.1), and S. serratifolium (99.5). S. hemiphyllum inhibited about 52% of superoxide radical generation followed by S. miyabei (43.7%), S. filicinum (40.4%) and S. serratifolium (34.8%). Vitamin C as positive control inhibited 34.7% of superoxide radical generation. Conclusions Our results exhibited that various S. species showed different antioxidant capacities, indicating the different compositions and proportions of antioxidant compounds in the species. Therefore, further study is warranted to investigate bioactive compounds of the S. species based on our screening. Funding Sources This research was supported by the Pukyong National University Research Fund (2018).

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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

Acta Scientifica Malaysia ◽

10.26480/asm.02.2021.67.72 ◽

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.

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Polyphenols, Vitamin C, in Vitro Antioxidant Capacity, α-Amylase and COX-2 Inhibitory Activities of Citrus Samples from Aceh, Indonesia

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000481 ◽

2019 ◽

Vol 89 (5-6) ◽

pp. 337-347 ◽

Cited By ~ 1

Author(s):

Constanze Thieme ◽

Anna Westphal ◽

Angelika Malarski ◽

Volker Böhm

Keyword(s):

Vitamin C ◽

Antioxidant Capacity ◽

Inhibitory Activity ◽

Trolox Equivalent Antioxidant Capacity ◽

Citrus Fruits ◽

Antioxidant Capacities ◽

Trolox Equivalent ◽

Cox 2 ◽

Highly Correlated

Abstract. This study was conducted to analyse antioxidant potencies, vitamin C contents, polyphenol profiles, antidiabetic and anti-inflammatory potencies of citrus fruits from Indonesia. Total phenolics contents (TPC) of seven citrus fruits from northern Aceh, Indonesia, were measured using Folin-Ciocalteu (FC) and Fast Blue BB (FBBB) methods. Total flavonoid content (TFC) test showed for peel and pulp extracts of calung and jeruk takengon (local mandarin) the highest values. H-TEAC (hydrophilic trolox equivalent antioxidant capacity) and H-ORAC (hydrophilic oxygen reactive absorbance capacity) antioxidant capacity were highest for peel and pulp of jeruk takengon, calung and kruet mameh. Interestingly, peel extracts showed no α-amylase inhibition activity whilst pulp showed weak inhibitory activity. Polyphenol composition was dominated by flavanones, with hesperidin and neohesperidin as main flavanones (hesperidin: 131–5433 mg/100 g DW, neohesperidin: 431–4131 mg/100 g DW). Vitamin C contents were highly correlated with antioxidant capacities in pulp (R2 = 0.95 and R2 = 0.94 at p < 0.01 for H-TEAC and H-ORAC, respectively), and TPC and TFC were highly correlated with antioxidant capacities (R2 = 0.99 and R2 = 0.98 for TPC FC in pulp and R2 = 0.93 and R2 = 0.84 in peel for H-TEAC and H-ORAC, respectively; R2 = 0.88 and R2 = 0.80 in pulp, and R2 = 0.68 and R2 = 0.75 for TFC in peel for H-TEAC and H-ORAC at p < 0.01). In-vitro COX-2 inhibitory activity tests resulted in higher activity for pulp compared to the corresponding peel extracts except for calung. Pulp extract of jeruk takengon showed the highest activity. In general, local citrus fruits from Aceh, Indonesia, are potential sources of polyphenols and vitamin C.

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