Effect of harvest time on the chemical composition and antioxidant capacity of Gannan navel orange (Citrus sinensis L. Osbeck ‘Newhall’) juice

Zhang, Jun; ZHANG, Jing-yi; Shan, Youxia; Guo, Can; He, Lizhong; Zhang, Linyan; Ling, Wei; Liang, Yan; Zhong, Balian

doi:10.1016/s2095-3119(20)63395-0

Cited by 23 publications

(15 citation statements)

References 35 publications

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“…Newhall navel orange ( Citrus sinensis Osbeck cv. Newhall) is one of the most important economic fruits in Ganzhou of Jiangxi province, China 31 . However, citrus canker disease and citrus blue mold severely hurt the navel orange industry here, causing tremendous economic losses each year due to the reduced yield and quality of oranges.…”

Section: Introductionmentioning

confidence: 99%

“…Newhall) is one of the most important economic fruits in Ganzhou of Jiangxi province, China. 31 However, citrus canker disease and citrus blue mold severely hurt the navel orange industry here, causing tremendous economic losses each year due to the reduced yield and quality of oranges. As part of our continuous efforts to discover highly efficient pesticides with novel modes of action from natural resources, the endophytes associated with navel orange trees attract our great interest because of the close relationship between them and the host plants, especially that the endophytes might protect the host plant against the infection of pathogens.…”

Section: Introductionmentioning

confidence: 99%

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Actinomycins produced by endophyte Streptomyces sp. GLL‐9 from navel orange plant exhibit high antimicrobial effect against Xanthomonas citri susp. citri and Penicillium italicum

Gao,

Kumaravel,

Xiong

et al. 2023

Pest Management Science

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BACKGROUNDCitrus canker and citrus blue mold are two severe diseases in citrus plants, which are mainly caused by Xanthomonas citri susp. citri (Xcc) and Penicillium italicum, respectively. The currently widely used pesticides for these two diseases are harmful to human health and the environment. Therefore, searching for novel antimicrobial agents, especially from natural resources, is getting increasing interest.RESULTSIn this study, the crude extract of Streptomyces sp. GLL‐9, an endophyte from a navel orange tree, was found to exhibit excellent antimicrobial effects against Xcc and P. italicum. Bioassay‐guided isolation led to the discovery of three actinomycins (Acts), actinomycin X2 (Act‐X2), actinomycin D (ActD), and actinomycin XOβ (Act‐XOβ). The MIC (minimum inhibitory concentration) values of Act‐X2, ActD, and Act‐XOβ were 31.25, 62.50, and 62.50 μg mL−1 against Xcc, respectively, while 62.50 (Act‐X2) and 125.00 μg mL−1 (ActD) against P. italicum, being better or comparable to the positive controls. The highest yield of Acts was obtained by solid‐state fermentation with rice containing 1% L‐tryptophan as a culture medium, being 6.03, 3.07, and 1.02 mg g−1, for Act‐X2, ActD, and Act‐XOβ, respectively. The ethyl acetate extract of Streptomyces sp. GLL‐9 cultivated under the optimal fermentation conditions (EAE‐1) can efficiently control these two citrus diseases by excessively producing reactive oxygen species (ROS) in both pathogens, damaging the cell membranes of P. italicum, and inhibiting the growth of Xcc. In addition, Act‐X2, ActD, and EAE‐1 displayed broad‐spectrum antifungal activity.CONCLUSIONEAE‐1 and Acts produced by Streptomyces sp. GLL‐9 have high potential as novel antimicrobial agents against plant pathogens. © 2023 Society of Chemical Industry.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Actinomycins produced by endophyte Streptomyces sp. GLL‐9 from navel orange plant exhibit high antimicrobial effect against Xanthomonas citri susp. citri and Penicillium italicum

Gao,

Kumaravel,

Xiong

et al. 2023

Pest Management Science

Self Cite

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“…Total soluble solids (SSC, Brix) and titratable acidity (TA, in g/100 mL, presented as a percentage of citric acid) were measured using a digital Brix/acidity meter (PAL‐BXIACID1, ATAGO) for pummelo juice. Vitamin C (ascorbic acid, mg/100 mL) was determined by titration against a solution of 2,6‐dichlorophenolindophenol and the value was expressed as milligrams of ascorbic acid per 100 mL of pummelo juice (Zhang et al., 2022). Each sample included three biological replicates and each measurement included three technical replicates.…”

Section: Methodsmentioning

confidence: 99%

Nutritional and volatile profiles of pulp and flavedo from four local pummelo cultivars grown in Fujian province of China

Zhou

Kong

et al. 2023

Journal of Food Science

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The nutritional and volatile profiles of pulp and flavedo samples from four distinct local pummelo landraces (“Siji,” “Pingshan,” “Wendan,” and “Guanxi”) cultivated in Fujian province of China were investigated. “Guanxi” pummelo exhibited relatively high contents of vitamin C (42.01 mg/100 mL) and phenols (360.61 mg/L) and displayed a robust antioxidant capacity (41.15 mg/100 mL). Conversely, the red pulp from “Pingshan” demonstrated relatively high values of carotenoids (55.96 µg/g) and flavonoids (79.79 mg/L). Considerable differences were observed in volatile compositions between the two fruit tissues and among the four genotypes. A total of 166 and 255 volatile compounds were detected in the pulp and flavedo samples, respectively. Notably, limonene and β‐myrcene were identified as the principal volatile compounds in flavedo, whereas hexanal was highly abundant in the pulp of “Siji,” “Pingshan,” and “Guanxi.” “Wendan” displayed distinct separation from the other three pummelo cultivars in principal component analysis based on the pulp volatile compositions. This distinction was attributed to the higher number and content of volatile compounds in “Wendan” pulp, particularly the remarkable enrichment of β‐myrcene. The newly characterized pummelo landraces and genotype/tissue‐dependent variations in volatiles provide essential information for the genetic improvement of pummelo aroma, as well as for fruit processing and utilization.

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“…Although scientific research studies on citrus fruit quality traits have focused on mainly oranges due to high economic value, in consumer behavior changes occurred recently and increased demand for mandarins have directly caused further research concentrate on fruit quality traits of mandarins. − …”

Section: Introductionmentioning

confidence: 99%

Comparison of Some Fruit Quality Parameters of Selected 12 Mandarin Genotypes from Black Sea Region in Turkey

et al. 2023

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Mandarins are mostly preferred specie of Citrus genus, and there has been a continuous rise in consumption and global marketing due to having easy-to-peel, attractive flavor, and fresh consumption advantages. However, most of the existing knowledge on quality traits of citrus fruit comes from research conducted on oranges, which are the main products for the citrus juice manufacturing industry. In recent years, mandarin production in Turkey surpassed orange production and took the first place in citrus production. Mandarins are mostly grown in the Mediterranean and Aegean Regions of Turkey. Due to suitable climatic conditions, they are also grown in the microclimatic condition in Rize province located in the Eastern Black Sea region. In this study, we reported the total phenolic content, total antioxidant capacity, and volatiles of 12 Satsuma mandarin genotypes selected from Rize province of Turkey. Considerable differences in the total phenolic content, total antioxidant capacity (2,2-diphenyl-1-picrylhydrazyl assay), and fruit volatile constituent were found among the 12 selected Satsuma mandarin genotypes. The total phenolic content ranged from 3.50 to 22.53 mg of gallic acid equivalent per 100 g of the fruit sample in the selected mandarin genotypes. The total antioxidant capacity was the highest in genotype HA2 as 60.40%, and followed by IB (59.15%) and TEK3 (58.36%), respectively. A total of 30 aroma volatiles were detected from the juice samples of 12 mandarin genotypes by GC/MS, which comprised six alcohols, three aldehydes (including one monoterpene), three esters, one ketone, and one other volatiles. The main volatile compounds were identified in fruits of all Satsuma mandarin genotypes as α-terpineol (0.6–1.88%), linalool (1.1–3.21%), γ-terpinene (4.41–5.5%), β-myrcene (0.9–1.6%), dl-limonene (79.71–85.12%), α-farnesene (1.1–2.44), and d-germacrene (0.66–1.37%). Limonene accounts for most of the aroma compounds (79.71–85.12%) in fruits of all Satsuma genotypes. The genotypes MP and TEK8 had the highest total phenolic content, and HA2, IB, and TEK 3 had the highest antioxidant capacity. The YU2 genotype was found to contain more aroma compounds than the other genotypes. The genotypes selected on the basis of their high bioactive content could be used to develop new Satsuma mandarin cultivars with high human health promoting contents.

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Effect of harvest time on the chemical composition and antioxidant capacity of Gannan navel orange (Citrus sinensis L. Osbeck ‘Newhall’) juice

Cited by 23 publications

References 35 publications

Actinomycins produced by endophyte Streptomyces sp. GLL‐9 from navel orange plant exhibit high antimicrobial effect against Xanthomonas citri susp. citri and Penicillium italicum

Actinomycins produced by endophyte Streptomyces sp. GLL‐9 from navel orange plant exhibit high antimicrobial effect against Xanthomonas citri susp. citri and Penicillium italicum

Nutritional and volatile profiles of pulp and flavedo from four local pummelo cultivars grown in Fujian province of China

Comparison of Some Fruit Quality Parameters of Selected 12 Mandarin Genotypes from Black Sea Region in Turkey

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