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1. Effect of exogenous sucrose on anthocyanin synthesis in postharvest strawberry fruit

Author:
Xu, Yanqun,   et al.   ; Li, Dong; Zhang, Xiaochen; Li, Li; Aghdam, Morteza Soleimani; Luo, Zisheng;     Show all 6 Authors
Source:
Food chemistry 2019 v.289 pp. 112-120
ISSN:
0308-8146
Subject:
beta-fructofuranosidase; callistephin; enzyme activity; fructose; fruits; glucose; pelargonidin; pentose phosphate cycle; ripening; shikimate pathway; strawberries; sucrose; transcription (genetics)
Abstract:
... Sucrose acts as a vital signal that modulates fruit ripening. In current study, 50 mM sucrose was applied in strawberry fruit to investigate the regulation of sucrose in anthocyanin synthesis after harvest. The results showed that sucrose treatment increased the contents of glucose, fructose and sucrose, which were 19.76%, 15.83% and 16.50% higher, respectively, compared with control at the end of ...
DOI:
10.1016/j.foodchem.2019.03.042

2. Hydrogen peroxide accelerated the lignification process of bamboo shoots by activating the phenylpropanoid pathway and programmed cell death in postharvest storage

Author:
Xu, Yanqun,   et al.   ; Li, Dong; Limwachiranon, Jarukitt; Li, Li; Zhang, Li; Fu, Maorun; Luo, Zisheng;     Show all 7 Authors
Source:
Postharvest biology and technology 2019 v.153 pp. 79-86
ISSN:
0925-5214
Subject:
NAD(P)H oxidase (H2O2-forming); NADP (coenzyme); bamboo shoots; biosynthesis; caspases; cell walls; deoxyribonucleases; enzyme activity; firmness; hydrogen peroxide; lignification; lignin; lignin content; postharvest storage; programmed cell death; ribonucleases; shoots; transmission electron microscopy
Abstract:
... Lignification is a typical characteristic of senescence of bamboo shoots during postharvest storage. In this study, exogenous hydrogen peroxide (H2O2) and diphenyliodonium iodide (DPI) were applied to postharvest bamboo shoots to explore the regulation of H2O2 in the lignification process. Bamboo shoots, soaked in 10 mM H2O2 or 5 mM DPI for 10 min, were stored at 20 ± 1 °C for 12 d. H2O2 treatment ...
DOI:
10.1016/j.postharvbio.2019.03.012

3. Preharvest UV-C treatment affected postharvest senescence and phytochemicals alternation of strawberry fruit with the possible involvement of abscisic acid regulation

Author:
Xu, Yanqun,   et al.   ; Charles, Marie Thérèse; Luo, Zisheng; Mimee, Benjamin; Tong, Zhichao; Roussel, Dominique; Rolland, Daniel; Véronneau, Pierre-Yves;     Show all 8 Authors
Source:
Food chemistry 2019 v.299 pp. 125138
ISSN:
0308-8146
Subject:
abscisic acid; ambient temperature; fruit quality; fruits; physiology; polyphenols; postharvest storage; storage temperature; strawberries; ultraviolet radiation
Abstract:
... As an environmentally friendly approach for fruit quality improvement, the effect of preharvest UV-C on the physiology of strawberry fruit during postharvest storage remains to be assessed. Strawberry fruit developed with supplementary UV-C were stored at room temperature for 2 weeks. Preharvest UV-C attenuated fruit postharvest senescence and altered phytochemicals composition. Higher ester titer ...
DOI:
10.1016/j.foodchem.2019.125138

4. Elevated CO2 delayed the chlorophyll degradation and anthocyanin accumulation in postharvest strawberry fruit

Author:
Xu, Yanqun,   et al.   ; Li, Dong; Zhang, Xiaochen; Li, Li; Aghdam, Morteza Soleimani; Wei, Xianxue; Liu, Jiaqi; Luo, Zisheng;     Show all 8 Authors
Source:
Food chemistry 2019 v.285 pp. 163-170
ISSN:
0308-8146
Subject:
anthocyanins; biosynthesis; carbon dioxide; carbon dioxide enrichment; chlorophyll; chlorophyllase; color; enzyme activity; fruits; gene expression regulation; genes; quantitative polymerase chain reaction; residual effects; reverse transcriptase polymerase chain reaction; strawberries
Abstract:
... Colour is an important quality attribute for the consumer’s acceptability of fruit. Elevated CO2 was applied to strawberry fruit to explore its influence on chlorophyll catabolism and anthocyanin synthesis. The results showed that 20% CO2 delayed the changes of a* and b* values in strawberry fruit. The degradation of chlorophyll was delayed in CO2 treated fruit by inhibiting the activities of chlo ...
DOI:
10.1016/j.foodchem.2019.01.150

5. Ultraviolet‐C priming of strawberry leaves against subsequent Mycosphaerella fragariae infection involves the action of reactive oxygen species, plant hormones, and terpenes

Author:
Xu, Yanqun,   et al.   ; Charles, Marie Thérèse; Luo, Zisheng; Mimee, Benjamin; Tong, Zhichao; Véronneau, Pierre‐Yves; Roussel, Dominique; Rolland, Daniel;     Show all 8 Authors
Source:
Plant, cell and environment 2019 v.42 no.3 pp. 815-831
ISSN:
0140-7791
Subject:
Mycosphaerella fragariae; abscisic acid; crops; defense mechanisms; disease control; elicitors; enzymes; gene overexpression; genes; host-pathogen relationships; irradiation; jasmonic acid; leaf spot; leaves; pathogenesis-related proteins; pathogens; phenotype; reactive oxygen species; salicylic acid; strawberries; sustainable technology; ultraviolet radiation
Abstract:
... Ultraviolet‐C (UV‐C) radiation has been reported to induce defence responses to pathogens in growing crops and described as a new environmentally friendly method for disease control. However, whether the effect of the induced defence mechanisms will persist after the stress imposed by UV‐C is alleviated and how these mechanisms interact with pathogen elicitors upon infection have not yet been inve ...
DOI:
10.1111/pce.13491

6. Effects of elevated CO2 on energy metabolism and γ-aminobutyric acid shunt pathway in postharvest strawberry fruit

Author:
Xu, Yanqun,   et al.   ; Li, Dong; Li, Li; Xiao, Gongnian; Limwachiranon, Jarukitt; Lu, Hongyan; Yang, Dongmei; Luo, Zisheng;     Show all 8 Authors
Source:
Food chemistry 2018 v.265 pp. 281-289
ISSN:
0308-8146
Subject:
NAD (coenzyme); carbon dioxide; carbon dioxide enrichment; energy; energy metabolism; enzyme activity; fruits; gamma-aminobutyric acid; gene expression; storage temperature; strawberries
Abstract:
... The elevated CO2 was applied to the strawberry fruit during storage at 0 °C, in which its effects on energy metabolism and the γ-aminobutyric acid (GABA) shunt pathway were investigated. 10% and 20% CO2 maintained quality of the fruit. The energy charge of 10% and 20% CO2-treated fruit was decreased by 7.58% and 23.93% on day 12, respectively, compared with the control fruit, which was associated ...
DOI:
10.1016/j.foodchem.2018.05.106

7. Characterisation of volatile compounds of farmed soft‐shelled turtle (Pelodiscus sinensis) by solid‐phase microextraction and the influence of matrix pH on the release of volatiles

Author:
Xu, Yanqun,   et al.   ; Limwachiranon, Jarukitt; Li, Li; Ru, Qiaomei; Luo, Zisheng;     Show all 5 Authors
Source:
International journal of food science & technology 2017 v.52 no.1 pp. 275-281
ISSN:
0950-5423
Subject:
Pelodiscus sinensis; headspace analysis; meat; octenol; odors; pH; principal component analysis; solid phase microextraction; temperature; turtles; volatile compounds; volatilization; xylene
Abstract:
... Although farming and consuming of soft‐shelled turtle has been practised for centuries, the aroma‐impact compounds in the meat have not been determined. Furthermore, matrix pH, usually changing during processing and storage stage, was rarely investigated for the influence on volatile profiles. To these aims, soft‐shelled turtle meat was subjected to different pH conditions and the potential volati ...
DOI:
10.1111/ijfs.13279

8. Preharvest Ultraviolet C Treatment Affected Senescence of Stored Strawberry Fruit with a Potential Role of MicroRNAs in the Activation of the Antioxidant System

Author:
Xu, Yanqun,   et al.   ; Charles, Marie Thérèse; Luo, Zisheng; Mimee, Benjamin; Tong, Zhichao; Véronneau, Pierre-Yves; Rolland, Daniel; Roussel, Dominique;     Show all 8 Authors
Source:
Journal of agricultural and food chemistry 2018 v.66 no.46 pp. 12188-12197
ISSN:
1520-5118
Subject:
ambient temperature; enzyme activity; fruits; horticultural crops; hydrogen peroxide; lipid peroxidation; microRNA; postharvest storage; shelf life; storage temperature; strawberries; sugars; superoxide anion; ultraviolet radiation
Abstract:
... Recent studies presented preharvest ultraviolet C (UV-C) as an environmentally friendly approach for the management of horticultural crop diseases. The effect of this approach on quality preservation during postharvest storage has not yet been investigated. Strawberry fruit harvested from plants grown with supplemental UV-C were stored at room temperature for 72 h, and their postharvest shelf-life ...
DOI:
10.1021/acs.jafc.8b04074

9. Preharvest Ultraviolet C Irradiation Increased the Level of Polyphenol Accumulation and Flavonoid Pathway Gene Expression in Strawberry Fruit

Author:
Xu, Yanqun,   et al.   ; Charles, Marie Thérèse; Luo, Zisheng; Mimee, Benjamin; Veronneau, Pierre-Yves; Rolland, Daniel; Roussel, Dominique;     Show all 7 Authors
Source:
Journal of agricultural and food chemistry 2017 v.65 no.46 pp. 9970-9979
ISSN:
1520-5118
Subject:
cyanidin; disease resistance; ellagic acid; gene expression; gene expression regulation; glucosides; irradiation; kaempferol; nutritive value; pelargonidin; polyphenols; quercetin; strawberries; structural genes; ultraviolet radiation
Abstract:
... Preharvest ultraviolet C (UV-C) irradiation is an innovative approach for increasing the bioactive phytochemical content of strawberries to increase the disease resistance and nutritional value. This study investigated the changes in individual flavonoids in strawberry developed with three different cumulative doses of preharvest UV-C treatment (low, 9.6 kJ m–²; middle, 15 kJ m–²; and high , 29.4 ...
DOI:
10.1021/acs.jafc.7b04252

10. Binding and neutralizing anti-cytomegalovirus activities in immune globulin products

Author:
Xu, Yanqun,   et al.   ; Wang, Xiao; Scott, Dorothy E.; Murata, Haruhiko; Struble, Evi B.;     Show all 5 Authors
Source:
Biologicals 2017 v.50 pp. 35-41
ISSN:
1045-1056
Subject:
Cytomegalovirus; antibodies; antiviral properties; enzyme-linked immunosorbent assay; epithelial cells; epithelium; fibroblasts; humans; immunocompromised population; morbidity; mortality; neutralization
Abstract:
... Congenital infection as well as infection of immunocompromised individuals by cytomegalovirus (CMV) can be associated with significant morbidity, mortality, and long-term adverse health outcomes. Assessment of anti-viral activity using appropriate assays is essential for ensuring safe and efficacious use of therapeutic CMV immune globulin (IG) products. In this study, we used commercial ELISA kits ...
DOI:
10.1016/j.biologicals.2017.09.004

11. Pre-harvest UV-C irradiation triggers VOCs accumulation with alteration of antioxidant enzymes and phytohormones in strawberry leaves

Author:
Xu, Yanqun,   et al.   ; Luo, Zisheng; Charles, Marie Thérèse; Rolland, Daniel; Roussel, Dominique;     Show all 5 Authors
Source:
Journal of plant physiology 2017 v.218 pp. 265-274
ISSN:
0176-1617
Subject:
alcohol dehydrogenase; strawberries; biosynthesis; catalase; jasmonic acid; enzyme activity; lipid peroxidation; linoleate 13S-lipoxygenase; volatile organic compounds; biochemical pathways; abscisic acid; irradiation; antioxidant activity; ultraviolet radiation; peroxidase; antioxidants; leaves
Abstract:
... Recent studies have highlighted the biological and physiological effects of pre-harvest ultraviolet (UV)-C treatment on growing plants. However, little is known about the involvement of volatile organic compounds (VOCs) and their response to this treatment. In this study, strawberry plants were exposed to three different doses of UV-C radiation for seven weeks (a low dose: 9.6kJm−2; a medium dose: ...
DOI:
10.1016/j.jplph.2017.09.002

12. Effect of Exogenous Nitro Oxide on Chilling Tolerance, Polyamine, Proline, and γ-Aminobutyric Acid in Bamboo Shoots (Phyllostachys praecox f. prevernalis)

Author:
Xu, Yanqun,   et al.   ; Wang, Di; Li, Li; Limwachiranon, Jarukitt; Li, Dong; Ban, Zhaojun; Luo, Zisheng;     Show all 7 Authors
Source:
Journal of agricultural and food chemistry 2017 v.65 no.28 pp. 5607-5613
ISSN:
0021-8561
Subject:
Phyllostachys violascens; arginine decarboxylase; bamboo shoots; chilling injury; cold storage; cold tolerance; enzyme activity; gamma-aminobutyric acid; glutamate decarboxylase; malondialdehyde; metabolism; nitric oxide; nitric oxide synthase; nitroprusside; ornithine decarboxylase; polyamines; proline
Abstract:
... The effects of exogenous nitro oxide (NO) on chilling resistance and the metabolism of polyamine, proline, and γ-aminobutyric acid of bamboo shoots were investigated. Bamboo shoots were dipped in 0.07 mM sodium nitroprusside (SNP) and stored at 1 °C for 56 days. During the storage, the development of chilling injury of SNP treated bamboo shoots was inhibited with decreased accumulation of malonald ...
DOI:
10.1021/acs.jafc.7b02091

13. Potential link between fruit yield, quality parameters and phytohormonal changes in preharvest UV-C treated strawberry

Author:
Xu, Yanqun,   et al.   ; Charles, Marie Thérèse; Luo, Zisheng; Roussel, Dominique; Rolland, Daniel;     Show all 5 Authors
Source:
Plant physiology and biochemistry 2017 v.116 pp. 80-90
ISSN:
0981-9428
Subject:
abscisic acid; alcohols; antioxidants; ascorbic acid; citric acid; fruit quality; fruit yield; fruits; jasmonic acid; malondialdehyde; odors; oxygen radical absorbance capacity; strawberries; sucrose; ultraviolet radiation
Abstract:
... Preharvest ultraviolet-C (UV-C) treatment of strawberry is a very new approach, and little information is available on the effect of this treatment on plant growth regulators. In this study, the effect of preharvest UV-C irradiations at three different doses on strawberry yield, fruit quality parameters and endogenous phytohormones was investigated simultaneously. The overall marketable yield of s ...
DOI:
10.1016/j.plaphy.2017.05.010

14. Effect of nano-SiO2-LDPE packaging on biochemical, sensory, and microbiological quality of Pacific white shrimp Penaeus vannamei during chilled storage

Author:
Xu, Yanqun,   et al.   ; Luo, Zisheng; Ye, Qingyang;     Show all 3 Authors
Source:
Fisheries science 2015 v.81 no.5 pp. 983-993
ISSN:
0919-9268
Subject:
Litopenaeus vannamei; anti-infective properties; catechol oxidase; cold storage; microbiological quality; mixing; packaging; plate count; polyethylene; sensory evaluation; shelf life; shrimp; thiobarbituric acid-reactive substances; total volatile basic nitrogen; water holding capacity
Abstract:
... A novel nano-SiO₂ modified low density polyethylene (NSLDPE) packaging was prepared by blending LDPE with nano-SiO₂ in this study. Its effect on the quality of Pacific white shrimp Penaeus vannamei during 8-day storage at (4 ± 1) °C and compared NSLDPE with existing LDPE were investigated. The effect of NSLDPE packaging on the shrimp was compared with normal LDPE by analyzing the microbiological a ...
DOI:
10.1007/s12562-015-0914-3

15. Use of silver triangular nanoparticles for the colorimetric determination of ammonium persulfate concentration in water-borne adhesives for cigarettes

Author:
Xu, Yanqun,   et al.   ; Chen, Anyi; Zhu, Ruizhi; Wang, Naiding; Tai, Zhigang; Feng, Hongtao;     Show all 6 Authors
Source:
Analytical methods 2016 v.8 no.7 pp. 1483-1488
ISSN:
1759-9679
Subject:
adhesives; ammonium persulfate; cigarettes; colorimetry; nanoparticles; nanosilver; silver; standard deviation; surface plasmon resonance; ultraviolet-visible spectroscopy
Abstract:
... In this work, a simple method for detecting ammonium persulfate using silver triangular nanoparticles (silver TNPs) was developed. Specifically, silver TNPs exhibited strong/appreciable surface plasmon resonance (SPR) signals at 670 nm, and low concentrations of ammonium persulfate could induce a decrease in the SPR of the silver TNPs and a change in their appearance from blue to colorless. Furthe ...
DOI:
10.1039/c5ay02707a

16. Chemical constituents and antioxidant activity of the Musa basjoo flower

Author:
Xu, Yanqun,   et al.   ; Tai, Zhigang; Chen, Anyi; Qin, Bendui; Cai, Le;     Show all 5 Authors
Source:
European food research & technology 2014 v.239 no.3 pp. 501-508
ISSN:
1438-2377
Subject:
Musa basjoo; antioxidant activity; byproducts; caffeic acid; chemical composition; disease prevention; ethyl acetate; flowers; free radical scavengers; gallic acid; humans; isoquercitrin; metabolism; oxidants; quercitrin
Abstract:
... In this study, it was found that the ethyl acetate soluble fraction of Musa basjoo flowers was a rich source of antioxidant, due to its high total phenolic contents and significant antioxidant activity. Ten phenolic compounds were isolated from this plant. They are gallic acid (1), caffeic acid methyl ester (2), guaiacylglycerol (3), 3-(3,4-dihydroxyphenyl)-acrylic acid 1-(3,4-dihydroxyphenyl)-2-m ...
DOI:
10.1007/s00217-014-2244-6