Identification of pesticide residues on black tea by fluorescence hyperspectral technology combined with machine learning
نویسندگان
چکیده
Black tea has a long history in China, but export trade, pesticide residues often exceed the standard. To obtain rapid, accurate, and non-destructive identification method of on black tea, fluorescence hyperspectral data dry sprayed with distilled water six pesticides were collected this study. The spectra preprocessed by multiplicative scatter correction (MSC) standard normal variate (SNV). Then uninformative variable elimination (UVE), successive projections algorithm (SPA), competitive adaptive re-weighted sampling (CARS), UVE-SPA, CARS-SPA used to feature extraction. This study proposes machine learning model composed one-dimensional convolutional neural network backbone (1D CNN backbone) random forest classifier (RF classifier) identify 1D CNN-RF was compared three other models (support vector machine, RF, CNN). results show that MSC-CARS-SPA-1D is best for identifying which accuracy test set 99.05%. Combined technology, proposed great potential tea.
منابع مشابه
Identification of pesticide varieties by testing microalgae using Visible/Near Infrared Hyperspectral Imaging technology.
In our study, the feasibility of using visible/near infrared hyperspectral imaging technology to detect the changes of the internal components of Chlorella pyrenoidosa so as to determine the varieties of pesticides (such as butachlor, atrazine and glyphosate) at three concentrations (0.6 mg/L, 3 mg/L, 15 mg/L) was investigated. Three models (partial least squares discriminant analysis combined ...
متن کاملDetermination of Ivermectin Residues in Bovine Liver Samples By ELISA and HPLC with Fluorescence Detection
ABSTRACT Background and Objectives: Ivermectin is an anti-parasitic medication frequently used in many food-producing animals. This study aimed to investigate the level of ivermectin residue in liver samples collected from slaughterhouses in Qazvin Province, Iran. Methods: Overall, 88 bovine liver sam...
متن کاملthe effect of consciousness-raising activities on learning grammatical structures by iranian guidance school efl learners
abstract the first purpose of this study was to investigate the effect of consciousness-raising (c-r) activities on learning grammatical structures (simple present tense in this case) by iranian guidance school efl learners. the second one was to investigate the effect of gender on learning the simple present tense through c-r activities and tasks. finally, this study aimed to investigate the ...
Dissipation Behavior of Fenpyroximate Residues in Black Tea and Brew
Fenpyroximate is an effective acaricide on several food crops. In the present study, dissipation of residue of this acaricide in black tea, tea infusion and spent tea was studied. Analysis was carried out using high performance liquid chromatography with diode array detection. The rate of dissipation was found to vary with the nature of the substrate. In tea leaves the half-life of fenpyroximat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Food Science and Technology
سال: 2022
ISSN: ['2331-513X', '2331-5156']
DOI: https://doi.org/10.1590/fst.55822