Non-parametric partial least squares–discriminant analysis model based on sum of ranking difference algorithm for tea grade identification using electronic tongue data

Chen, Xiaojing; Xu, Yanhua; Meng, Liuwei; Chen, Xi; Yuan, Lei‐ming; Cai, Qibo; Shi, Wen; Huang, Guangzao

doi:10.1016/j.snb.2020.127924

Cited by 107 publications

(54 citation statements)

References 46 publications

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“…In the cosmetics industry, it is currently being used as facial masks or ointments and also in food products, accompanied with other components to treat skin disease as well as help in activation of blood circulation [3]. Presently, the replacement of synthetic antioxidant with naturally occurring antioxidant is increasing due to the side effects associated with synthetic antioxidant such as increased risk of cancer [4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Physicochemical and DPPH� Cleaning Activity of Ultrasonic Assisted Extraction of Polysaccharide from Leonurus japonicus

Yang¹,

Mercy²,

Efehi³

et al. 2020

Rev. Chim.

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Leonurus japonicus is rich in bioactive compounds especially polysaccharide. Single factors test and response surface methodology were used to study the optimum conditions for ultrasonic - assisted extraction of polysaccharide from L. japonicus, and its physiochemical and DPPH scavenging activities also were evaluated. The optimal conditions as underpinned by this paper is as follow: extraction temperature of 70 �C, extraction time of 50 min and extraction power of 210W. The polysaccharide of L. japonicus was shown to be a non-reducing sugar and to exhibit DPPH scavenging activity to an extent. The polysaccharide structures were studied using SEM, AFM, and FT-IR. It showed L. japonicus polysaccharide had been having more than one chains which were branched and entangled with each other. and existed a broad band wavelength of 2925.64, 1635.06, 1539.7, 1046.73, and 477.86 cm-1. The study indicated that L. japonicus may have a beneficial use to the medical and food industries.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Physicochemical and DPPH� Cleaning Activity of Ultrasonic Assisted Extraction of Polysaccharide from Leonurus japonicus

Yang¹,

Mercy²,

Efehi³

et al. 2020

Rev. Chim.

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show abstract

“…In the observation group, the expression level of CRP after treatment was significantly lower than that before treatment (P< 0.05), which may be because the antibacterial effect of antibiotics reduced patients' inflammations, weakened the infiltration of inflammatory cells and reduced the expression level of CRP. This indicates that CRP may be a potential diagnostic indicator for the efficacy of severe pneumonia (29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40).…”

Section: Discussionmentioning

confidence: 93%

Expression levels of blood platelet and C-reactive protein in patients with severely pneumonic and their predictive values for efficacy

Ren²,

Guo

et al. 2020

Cell Mol Biol (Noisy-le-grand)

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This paper aims to detect the expression levels of blood platelet (PLT) and C-reactive protein (CRP) in severely pneumonic patients and analyze their correlation. For this purpose, eighty-one severely pneumonic patients were retrospectively selected as an observation group and 106 healthy people as a control group. Pretreatment and post-treatment expression levels of PLT and CRP, their predictive values for efficacy, and correlation of PLT, CRP, and PSI scores in observation group after treatment were analyzed. Before treatment, the expression level of PLT in the observation group was higher than the control group (P< 0.05). In the observation group, the expression level of PLT after treatment was significantly lower than that before treatment (P< 0.05). Before treatment, the expression level of CRP in the observation group was higher than the control group (P< 0.05). In the observation group 1) the pretreatment PLT expression level was higher than that in the control group; 2) the post-treatment PLT expression level was significantly lower than that in the pretreatment one; 3) the pretreatment CRP expression level was higher than that in the control group; and 4) the post-treatment CRP expression level was significantly lower than the pretreatment one (All P-values< 0.05). Based upon the efficacy, the observation group was divided into an effective group and an invalid group. The post-treatment expression levels of PLT and CRP in the effective group were lower than those in the invalid group (P< 0.05). Based upon the ROC curve, the area under curves (AUC) of PLT, CRP, and joint detection were 0.843, 0.864, and 0.886, respectively. When the cut-off point was > 0.579, the best specificity and sensitivity were 98.44 and 70.59%, respectively. According to the Pearson test, positive correlations existed between PLT and CRP, between PLT and PSI scores, and between CRP and PSI scores. In conclusion, the expression levels of PLT and CRP in severely pneumonic patients might be used to evaluate the efficacy and conducive to detection of the disease, which have high application values in clinic.

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“…They can accurately and objectively evaluate the performance of PLS-DA classification model. A classification model with good performance should have the high value of sensitivity, specificity, precision, and accuracy [ 24 , 32 ]. All algorithms and calculations are carried out in the MATLAB 2015b environment (The Math Works, Natick, USA).…”

Section: Methodsmentioning

confidence: 99%

Rapid Assessment of Exercise State through Athlete’s Urine Using Temperature-Dependent NIRS Technology

Ding

Yuan

Sun

et al. 2020

Journal of Analytical Methods in Chemistry

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Athletes usually take nutritional supplements and perform the specialized training to improve the performance of sport. A quick assessment of their athletic status will help to understand the current physical function of athletes’ status and the effect of nutritional supplementation. Human urine, as one of the most important body indicators, is composed of many metabolites, which can provide effective monitoring information for physical conditions. In this study, temperature-dependent near-infrared spectroscopy (NIRS) technology was used to collect the spectra of athlete’s urine for evaluating the feasibility of rapidly detecting the exercise state of the basketball player. To obtain the detection results accurately, several chemometrics methods including principal component analysis (PCA), variables selection method of variable importance in projection (VIP), continuous 1D wavelet transform (CWT), and partial least square-discriminant analysis (PLS-DA) were employed to develop a classifier to distinguish the physical status of athletes. The optimal classifying results were obtained by wavelet-PLS-DA classifier, whose average precision, sensitivity, and specificity are all above 0.95, and the overall accuracy of all samples is 0.97. These results demonstrate that temperature-dependent NIRS can be used to rapidly assess the physical function of athlete’s status and the effect of nutritional supplementation is feasible. It can be believed that temperature-dependent NIR spectroscopy will obtain applications more widely in the future.

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Non-parametric partial least squares–discriminant analysis model based on sum of ranking difference algorithm for tea grade identification using electronic tongue data

Cited by 107 publications

References 46 publications

Evaluation of Physicochemical and DPPH� Cleaning Activity of Ultrasonic Assisted Extraction of Polysaccharide from Leonurus japonicus

Evaluation of Physicochemical and DPPH� Cleaning Activity of Ultrasonic Assisted Extraction of Polysaccharide from Leonurus japonicus

Expression levels of blood platelet and C-reactive protein in patients with severely pneumonic and their predictive values for efficacy

Rapid Assessment of Exercise State through Athlete’s Urine Using Temperature-Dependent NIRS Technology

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