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Mathematical modelling on hot air drying of thin layer fresh tilapia fillets

100%
Guan Z., Wang X., Li M., Jiang X.
Polish Journal of Food and Nutrition Sciences
|
2013
|
tom 63
|
nr 1
The hot convective drying of fresh tilapia fillets was evaluated in a heat pump dryer. The influence of the drying temperature (35, 45 and 55°C), hot air velocity (1.50, 2.50 and 3.50 m/s) and thickness (3, 5 and 7 mm) of the tilapia fillets on the moisture ratio and drying rate has been studied. It shows that drying process took place in falling rate periods. The experimental drying data of fresh tilapia fillets under different conditions was fitted to nine different commonly used thin-layer drying models by nonlinear fitting methods and all the models were compared according to three statistical parameters, i.e. coefficient of determination, the reduced chi-square and the root mean square error. It was found that the coefficient of determination values of Page were higher than 0.99254, and the corresponding reduced chi-square and the root mean square error values were lower than 0.000632219 and 0.023854, respectively, indicating that the Page model is the best to describe drying curves of fresh tilapia fillets among them. Effective moisture diffusivity ranged from 6.55×10–10 to 1.23×10–9 m2/s calculated using the Fick’s second law. With the increase of the drying temperature and the hot air velocity, the effective moisture diffusivities Deff increased. The value of drying activation energy of tilapia fillets with thickness of 3 mm at hot air velocity 2.50 m/s was 17.66 kJ/mol, as determined from the slope of the Arrhenius plot, ln(Deff) versus 1/Ta.
2

Transcriptome of wax apple (Syzygium samarangense) provides insights into nitric oxide-induced delays of postharvest cottony softening

88%
Chen F., Hao Y., Yin Z., Wu G., Jiang X.
Acta Physiologiae Plantarum
|
2017
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tom 39
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nr 12
3

Castration-induced changes in microRNA expression profiles in subcutaneous adipose tissue of male pigs

88%
Cai Z., Zhang L., Chen M., Jiang X., Xu N.
Journal of Applied Genetics
|
2014
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tom 55
|
nr 2
4

Diel variation of water inorganic nitrogen and phosphorus during algal blooms

76%
Wang J., Zheng B., Kang X., Yu H., Li D., Jiang X.
Polish Journal of Environmental Studies
|
2019
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tom 28
|
nr 2
Water nitrogen and phosphorus may exhibit pronounced diel changes as affected by diel temperature and DO fluctuations due to algal productivity (photosynthesis and respiration) in eutrophic lakes. Here, we used a laboratory experiment to evaluate the diel dynamics of water ammonium (NH₄⁺), nitrate (NO₃⁻), and soluble reactive phosphorus (SRP) in different periods of algal bloom in the highly polluted region of Taihu Lake, China. Results showed that diel changes of water NH₄⁺ , NO₃⁻, and SRP depended on the different periods of algal bloom. Diel variations of NH₄⁺, NO₃⁻, and SRP showed increased trends during algal decomposition, and decreased trends at the beginning of algal growth, suggesting that their diel variations were mainly controlled by algae self through nutrients released by decomposing algae or algal assimilation. However, water NH₄⁺, NO₃⁻, and SRP decreased from predawn maxima to afternoon minima and subsequently increased when Chl-a was high, which might be governed by the combined effects of algal assimilation and geochemical processes (e.g., nitrification, denitrification, and Fe-bound P cycles). Overall, the diel biogeochemical cycles of inorganic nitrogen and SRP have important implications for the accuracy of pollution assessment and provide important support for the control and management of eutrophic lakes.
5

The activity of plasma membrane hyperpolarization-activated Ca2plus channels during pollen development of Pyrus pyrifolia

76%
Wu J., Jin C., Qu H., Jiang X., Wu J., Xu G., Zhang S.
Acta Physiologiae Plantarum
|
2012
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tom 34
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nr 3
Calcium (Ca²⁺) plays crucial roles in regulation of pollen tube growth. The influx of Ca²⁺ into the pollen tube is mediated by ion channels, and the density and activity of Ca²⁺ channels in pollen plasma membranes critically determines their electrical properties. In this report, using whole-cell and single-channel patch-clamping techniques, we investigated developmental changes of hyperpolarization-activated Ca²⁺ channel activity in pear (Pyrus pyrifolia) pollen and its relationship with pollen viability. For both pollen and pollen tubes, hyperpolarization-activated Ca²⁺ channels had the same conductance and cAMP sensitivity, indicating that they were the same channels. However, the Ca²⁺ current density in pollen tube protoplasts was greater than that in pollen protoplasts. Compared with day-3 flowers’ pollen, hyperpolarizationactivated Ca²⁺ current density was significantly lower in day 0 and day 3 flowers’ pollen, which was consistent with the pollen germination and pollen tube growth, indicating that pollen protoplasts’ increased Ca²⁺ current density may have enhanced the pollen viability. During pollen tube elongation, pollen tube plasma membrane Ca²⁺ current density increased with increased length pollen tubes up to 300 µm. All of these results indicated that hyperpolarization-activated Ca²⁺ channel activity was associated with in pear pollen development and may have a causal link between Ca²⁺ channel activity and pollen viability.
6

Contrasting patterns of sun-red and shade-green leaves of Buxus microphylla in response to gradients of excess light during winter acclimation

76%
Peng J., Jiang X., Jia M., Guo L., Gao R., Liu Y.
Acta Physiologiae Plantarum
|
2016
|
tom 38
|
nr 10
7

Normal spermatogenesis and fertility in Ddi1 (DNA damage inducible 1) mutant mice

76%
Yousaf A., Wu Y., Khan R., Shah W., Khan I., Shi Q., Jiang X.
Reproductive Biology
|
2020
|
tom 20
|
nr 4
8

Terapeutic potential of PACAP for neurodegenerative diseases

76%
Yang R., Jiang X., Ji R., Meng L., Liu F., Chen X., Xin Y.
Cellular and Molecular Biology Letters
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2015
|
tom 20
|
nr 2
9

Boron deficiency affects cell morphology and structure of young leaves of radish

76%
Cong X., Jing H., Lin N., Xia Z., Huang M., Jiang X.
Acta Physiologiae Plantarum
|
2015
|
tom 37
|
nr 11
Boron (B) is an essential microelement for the growth and development of plants. B-deficient radish plants grew slowly compared to B-sufficient controls. Soluble B and cell wall-bound B decreased in young leaves on removal of B from culture medium. In old leaves, B deficiency reduced soluble B content but there was no significant effect on cell wall-bound B content compared to controls. The mesophyll cells in the middle of leaves were enlarged abnormally and had greater cell wall thickness under B-deficient conditions. B deficiency reduced the stomata frequency, inhibited the stomata aperture, and guard cells had thickened cell walls. B-starved leaves showed decreased photosynthesis and stomatal conductance. These indicate that B deficiency could interfere with cell wall development, especially irregular guard cell walls as a result of B deficiency severely affected the rhythmic stomatal closing and opening, preventing the normal functioning of stomata. Correspondingly, photosynthesis was indirectly affected, and plant growth decreased.
10

Desloratadine ameliorates olfactory disorder and suppresses AMPA receptor GluA1 expression in allergic rhinitis rat

64%
Li S., Zhang X., Li Z., Jiang X., Zhang N., Zhang J., Huang Y., Zhao H., Jiang Y., Li N.
Archivum Immunologiae et Therapiae Experimentalis
|
2020
|
tom 68
|
nr 1
11

The novel Na+/H+ antiporter gene SpNHX1 from Sesuvium portulacastrum confers enhanced salt tolerance to transgenic yeast

64%
Zhou Y., Yang C., Hu Y., Yin X., Li R., Fu S., Zhu B., Guo J., Jiang X.
Acta Physiologiae Plantarum
|
2018
|
tom 40
|
nr 03
12

The response of Mo-hydroxylases and abscisic acid to salinity in wheat genotypes with differing tolerances

64%
Xu H., Zhai J., Liu Y., Cheng X., Xia Z., Chen F., Cui D., Jiang X.
Acta Physiologiae Plantarum
|
2012
|
tom 34
|
nr 5
The differential responses of the wheat cultivars Shi4185 and Yumai47 to salinity were studied. The higher sensitivity of Yumai47 to salinity was linked to a greater growth reduction under salt stress, compared to more salt-tolerant Shi4185. Salinity increased the Na⁺, proline and superoxide anion radical (O₂⁻) contents in both cultivars. Leaf Na⁺ content increased less in the more salttolerant cultivar Shi4185 than salt-sensitive Yumai47. The proline content increased more significantly in Shi4185 than Yumai47; on the contrary, superoxide anion radical content increased less in Shi4185 than Yumai47. This data indicated that wheat salinity tolerance can be increased by controlling Na⁺ transport from the root to shoot, associated with higher osmotic adjustment capability and antioxidant activity. Although salinity increased aldehyde oxidase (AO) activity and abscisic acid (ABA) content in the leaves and roots of both cultivars following the addition of NaCl to the growth medium, AO and ABA increased more in the salt-sensitive cultivar Yumai47 than the more salt-tolerant cultivar Shi4185. Xanthine dehydrogenase (XDH) activity in the leaves of both cultivars increased with increasing concentrations of NaCl; however, leaf XDH activity increased more significantly in Yumai47 than Shi4185. Root XDH activity in Shi4185 decreased with increasing NaCl concentrations, whereas salinity induced an increased root XDH activity in Yumai47. The involvement of AO and XDH enzymatic activities and altered ABA content in the response mechanisms of wheat to salinity are discussed herein.
13

RhNAC31, a novel rose NAC transcription factor, enhances tolerance to multiple abiotic stresses in Arabidopsis

64%
Ding A., Li S., Li W., Hao Q., Wan X., Wang K., Liu Q., Liu Q., Jiang X.
Acta Physiologiae Plantarum
|
2019
|
tom 41
|
nr 06
Plant-specific NAM, ATAF1/2, and CUC (NAC) transcription factors serve essential functions in plant development and plant responses to environmental cues. Yet, transcription factors specific to the rose (Rosa hybrida) NAM/CUC3 subfamily are poorly understood. Here, we identify a novel NAM/CUC3-subfamily transcription factor, RhNAC31, that is associated with flower opening and can be induced by increased salt, cold, and dehydration stress treatment. RhNAC31 has a transactivation region in its C-terminal region, and its overexpression is associated with enhanced cold tolerance in Arabidopsis, conferring a higher survival rate and reduced reactive oxygen (H₂O₂ and O₂⁻) levels. Under salt stress conditions, plants overexpressing RhNAC31 displayed increased germination rates and lower levels of H₂O₂, malondiadehyde (MDA), peroxidase (POD), and superoxide dismutase (SOD). Moreover, RhNAC31 conferred enhanced drought resistance by reducing the rate of water loss through leaves. Further characterization revealed a higher sensitivity of RhNAC31 transgenic plants to abscisic acid (ABA) both during and post-germination, causing lower germination and root inhibition rates under ABA treatment. Quantitative PCR experiments showed that numerous abiotic stress-related genes were activated by RhNAC31 overexpression. Our results highlight RhNAC31 as a positive transcriptional regulator of tolerance to multiple abiotic pressures, and we conclude that RhNAC31 has potential for use in the molecular breeding of stress-tolerant crops.
14

Characterization of the complete mitochondrial genome of Metastrongylus salmi (M. salmi) derived from Tibetan pigs in Tibet, China

64%
Li K., Shahzad M., Zhang H., Mehmood K., Jiang X., Luo H., Zhang L., Dong X., Li J.
Acta Parasitologica
|
2018
|
tom 63
|
nr 2
15

Ca2plus/Hplus exchange in the plasma membrane of Arabidopsis thaliana leaves

64%
Zhai J., Xu H., Cong X., Deng Y., Xia Z., Huang X., Hao G., Jiang X.
Acta Physiologiae Plantarum
|
2013
|
tom 35
|
nr 01
A large number of plant Ca2+/H+ exchangers have been identified in endomembranes, but far fewer have been studied for Ca2+/H+ exchange in plasma membrane so far. To investigate the Ca2+/H+ exchange in plasma membrane here, inside-out plasma membrane vesicles were isolated from Arabidopsis thaliana leaves using aqueous two-phase partitioning method. Ca2+/H+ exchange in plasma membrane vesicles was measured by Ca2+-dependent dissipation of a pre-established pH gradient. The results showed that transport mediated by the Ca2+/H+ exchange was optimal at pH 7.0, and displayed transport specificity for Ca2+ with saturation kinetics at Km = 47 lM. Sulfate and vanadate inhibited pH gradient across vesicles and decreased the Ca2+-dependent transport of H+ out of vesicles significantly. When the electrical potential across plasma membrane was dissipated with valinomycin and potassium, the rate of Ca2+/H+ exchange increased comparing to control without valinomycin effect, suggesting that the Ca2+/H+ exchange generated a membrane potential (interior negative), i.e. that the stoichiometric ratio for the exchange is greater than 2H+:Ca2+. Eosin Y, a Ca2+-ATPase inhibitor, drastically inhibited Ca2+/H+ exchange in plasma membrane as it does for the purified Ca2+-ATPase in proteoliposomes, indicating that measured Ca2+/H+ exchange activity is mainly due to a plasma membrane Ca2+ pump. These suggest that calcium (Ca2+) is transported out of Arabidopsis cells mainly through a Ca2+-ATPase-mediated Ca2+/H+ exchange system that is driven by the proton-motive force from the plasma membrane H+-ATPase.
16

Gut microbial compositions in four age groups of Tibetan minipigs

64%
Jiang X., Chen B., Gu D., Rong Z., Su X., Yue M., Zhou H., Gu W. W.
Polish Journal of Microbiology
|
2018
|
tom 67
|
nr 3
In this study, the gut microbiota was characterized in four age strata of Tibetan minipigs. Results indicated that the fecal bacteria of 7-, 28-, 56-, and 180-day-old minipigs did not significantly differ in terms of phylogenetic diversity (i.e., PD whole tree) or the Shannon index (both, p>0.05). Findings of a principal coordinate analysis demonstrated that fecal bacteria of 180-day-old minipigs were discernable from those of the other three age groups. From ages seven to 56 days, the abundance of Bacteroidetes or Firmicutes appeared to vary. Regarding genera, the populations of Bacteroides and Akkermansia decreased with increasing age.
17

Analysis of thylakoid membrane protein and photosynthesis-related key enzymes in super high-yield hybrid rice LYPJ grown in field condition during senescence stage

64%
Wang Y., Yu J., Jiang X., Sun L., Li K., Wang P., Wu M., Chen G., Lv C.
Acta Physiologiae Plantarum
|
2015
|
tom 37
|
nr 02
A proteomic analysis combining photosynthesis-related key enzymes measurement and mRNA level analysis was used to investigate the variations of proteins involved in the photosynthetic apparatus in flag leaves of high-yield rice LYPJ during senescence under field conditions. The stability of chlorophyll-protein complexes of thylakoid membranes was measured by BN-PAGE system. Our findings revealed that the LHCII complexes were more stable than F0F1-ATPase and Cyb6/f complexes. Thylakoid membranes proteins during the senescence stage were separated by two-dimensional gel electrophoresis. We identified 13 photosynthesis-related proteins (a fivefold or greater variation), including electron transport, Calvin– Benson cycle and chloroplast protease during senescence of flag leaves. Moreover, our data showed that Ca2+- ATPase was more stable during senescence of flag leaves in rice, compared to Mg2?-ATPase. In enzymes activities analyses, it was observed that a little increment of C4 photosynthetic enzymes activities at the beginning of flag leaves senescence might compensate, to some degree, for the larger reductions in Rubisco activity, confirmed by quantitative RT-PCR analysis.
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