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Classification of wheat varieties by PLS-DA and LDA models and investigation of the spatial distribution of protein content using NIR spectroscopy CIGR Journal
bagherpour, hossein.
Near-Infrared (NIR) spectroscopy gives information about the chemical properties of objects, and it is of particular interest for agricultural and food science applications given its rapid and non-destructive nature. This paper presents a study on the prediction of protein content in whole wheat kernels by NIR, comparing two statistical discriminant analysis techniques, namely PLS-DA and LDA, to classify wheat varieties and protein levels at the farm’s site. Data were collected from 3 varieties collected from 9 farms located in the same region, with a total of 54 samples analyzed. The NIR spectrometer used had a range of 950-1650 nm and it was used to classify different wheat samples according to their varieties and protein level. The optimal spectral...
Tipo: Info:eu-repo/semantics/article Palavras-chave: NIR spectroscopy; Wheat protein; Wheat variety identification; Protein variability.
Ano: 2022 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7205
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Exploratory data assessment of fecal NIRS from small ruminants: toward a global model to Brazilian Northeastern rangelands. Repositório Alice
BOMFIM, M. A. D.; MEDEIROS, A. N.; BATISTA, A. M. V.; SILVA, J. K.; MACIEL, M. do V.; CAVALCANTE, A. C. R.; GALVANI, D. B.; SANTOS, S. F. dos; ANGERER, J..
Abstract: The nutrition of grazing ruminants on Brazilian Northeastern rangelands (Caatinga) is challenging. The Fecal NIR spectrum shows high linearity with dietary nutrients of grazing ruminants. However, it requires a database variability wide enough to encompass all field condition. Many species from Caatinga have been identified as endemical, may acting as a link points, raising the possibility to build a global model. This work is a first approximation to evaluate the feasibility to develop a global model of fecal NIRS to small ruminants on Brazilian Caatinga. In conclusion, fecal NIR global model from Brazilian rangelands seems be potentially feasible, depending on how wide is the botanical composition of the area and when the samples are obtained,...
Tipo: Anais e Proceedings de eventos Palavras-chave: Infrared spectrophotometry; NIR spectroscopy; Caatinga; Small ruminants; Goats; Sheep; Ruminant nutrition; Animal nutrition; Rangelands; Animal models; Brazil; Semiarid soils.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1107114
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Quantification of anti-nutritional factors and their correlations with protein and oil in soybeans Anais da ABC (AABC)
BUENO,RAFAEL D.; BORGES,LEANDRO L.; GOD,PEDRO I.V. GOOD; PIOVESAN,NEWTON D.; TEIXEIRA,ARLINDO I.; CRUZ,COSME DAMIÃO; BARROS,EVERALDO G. DE.
ABSTRACT Soybeans contain about 30% carbohydrate, mainly consisting of non-starch polysaccharides (NSP) and oligosaccharides. NSP are not hydrolyzed in the gastrointestinal tract of monogastric animals. These NSP negatively affect the development of these animals, especially the soluble fraction. This work aimed to establish a method to quantify NSP in soybeans, using high performance liquid chromatography (HPLC), and to estimate correlations between NSP, oligosaccharides, protein and oil. Sucrose, raffinose + stachyose, soluble and insoluble NSP contents were determined by HPLC. Oil and protein contents were determined by near-infrared spectroscopy (NIRS). The soluble PNAs content showed no significant correlation with protein, oil, sucrose and raffinose...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soybean; Carbohydrates; Anti-nutritional factors; Quantitative analysis; HPLC; NIR spectroscopy.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100205
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Brachiaria plantaginea as a potential (new) source of shikimic acid: quantification by NIR and PLS regression. Repositório Alice
COSTA, M. C. A.; MATALLO, M. B.; FERREIRA, M. M. C.; QUEIROZ, S. C. do N. de; ALMEIDA, S. D. B.; FRANCO, D. A. S..
Abstract: Shikimic acid is a natural organic compound produced in the biochemical pathways of eukaryotic organisms and is generally utilized as a starting material of the antiviral drug Oseltamivir (Tamiflu®). This study shows the results of shikimic acid accumulation in Brachiaria plantaginea, an abundant, grassy plant found in Brazil and other countries in Africa and America, after glyphosate spraying at three different doses. B. plantaginea plants harvested after 6 days of exposure to the herbicide showed that shikimic acid accumulation increased by 345%, on average, compared to unsprayed plants. The combination of near infrared spectroscopy and multivariate analysis using partial least square regression was applied for the quantification of shikimic...
Tipo: Separatas Palavras-chave: NIR spectroscopy; PLS regression; Brachiaria plantaginea; Gramínea; Shikimic acid; Chemometrics.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1066054
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Brachiaria plantaginea (Link) Hitchc. as a potential (new) source of shikimic acid. Quantification by NIR and PLS regression. Repositório Alice
COSTA, M. C. A.; MATALLO, M. B.; FERREIRA, M. M. C.; QUEIROZ, S. C. do N. de; ALMEIDA, S. D. B.; FRANCO, D. A. S..
Shikimic acid is a natural compound, precursor of the antiviral Oseltamivir used against influenza A. It is a scarce and expensive chemical, obtained mainly from seeds of shrubs natives in China and Japan. In this study we propose a fast and clean procedure for the quantification of shikimic acid in B. plantaginea, an alternative source of shikimic acid, using NIR spectroscopy combined with PLS regression.
Tipo: Separatas Palavras-chave: NIR spectroscopy; Chemometric analysis; PLS regression.; Brachiaria Plantaginea.; Shikimic acid..
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1071444
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Diet authentication in sheep from the composition of animal tissues and products R. Bras. Zootec.
Prache,Sophie.
There is currently an increased consumer demand for information on herbivore production factors, particularly animal diet. To meet these demands, producers and commercial entities develop specifications via quality certifications. There is therefore a need for analytical tools that may guarantee that the specification commitments have been fully met or to help with constructing them. The present paper reviews the current state of knowledge concerning diet authentication in sheep meat and milk, the different approaches that have been investigated, some leading examples concerning the discrimination of contrasting feeding situations, together with the persistence of some diet markers in the event of changes in animals' diet. The nature of the diet strongly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Authentication; Diet tracers; Meat; NIR spectroscopy; Pasture-feeding; Reflectance.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001300036
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Grape quality mapping for vineyard differential harvesting BABT
Santos,Antonio Odair; Wample,Robert L.; Sachidhanantham,Sivakumar; Kaye,Oren.
An experiment was carried out from 2005 to 2008, to calibrated NIR-based instrumentation and explore within field grape quality variability and map potential grape quality descriptors along vineyards, as a subsidy for differential harvesting,. The quality indicators (anthocyanin content, pH, titratable acidity and soluble solids) were subject to geo-spatial modeling. Subsequently, the data set was utilized to delineate "within-field" grape quality zone and to determine the timing of the harvest. Differential machine harvesting was implemented and segregation of wine grapes was done "on-the-go". The approach for field prediction of grape quality parameters and zone delineation allowed for separated fermentation for at least two wine styles.
Tipo: Info:eu-repo/semantics/article Palavras-chave: NIR spectroscopy; Grape; Wine.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000200003
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การวิเคราะห์ปริมาณบีตา-แคโรทีนในผลปาล์มน้ำมันแบบรวดเร็ว Thai Agricultural
Sirinapha Khongcharean; Weeraphan Sridokchan; Patcharin Tanya; Pornsiri Liengsakul; Ronarit Ritiron.
ผลปาล์มน้ำมันเป็นแหล่งบีตา-แคโรทีนทางธรรมชาติที่สำคัญ ยังไม่มีรายงานถึงปริมาณบีตา-แคโรตีนในพันธุ์ปาล์มน้ำมันต่างๆ ที่ปลูกในประเทศไทย รวมถึงการวิเคราะห์หาปริมาณบีตา-แคโรทีนแบบรวดเร็ว วัตถุประสงค์ของงานวิจัยเพื่อวิเคราะห์ปริมาณบีตา-แคโรทีน ในผลปาล์มน้ำมันพันธุ์ต่างๆ ใน 2 พื้นที่ปลูก ได้แก่ จังหวัดกาญจนบุรีและจังหวัดทางภาคใต้ของประเทศ การวิเคราะห์แบบรวดเร็วโดยวิธีสเปกโตรสโกปีแบบ NIR เทียบกับวิธีสเปกโตรสโกปีแบบ UV-Vis ซึ่งเป็นวิธีมาตรฐานที่ใช้ในการอ้างอิง เพื่อนำมาสร้างสมการเทียบมาตรฐานหาปริมาณบีตา-แคโรทีน ในตัวอย่างผลปาล์มน้ำมันสด พบค่าเฉลี่ยปริมาณบีตา-แคโรทีนในผลปาล์มน้ำมันตั้งแต่ 1.04 – 15.42 mg/100g fw ซึ่งแตกต่างกันอย่างมีนัยสำคัญทางสถิติตามพันธุ์ปาล์มน้ำมัน ค่าเฉลี่ยของบีตา-แคโรทีนในกลุ่มตัวอย่างทางใต้ของประเทศมีค่าสูงกว่าในจังหวัดกาญจนบุรี คือ 9.41 และ...
Tipo: PhysicalObject Palavras-chave: Oil palm; Beta-carotene; NIR spectroscopy; Near Infrared spectroscopy; UV-Vis spectroscopic; Fast analysis; High performance liquid chromatography; HPLC; Calibration set; ปาล์มน้ำมัน; สายพันธุ์; บีต้าแคโรทีน; สารธรรมชาติ; การวิเคราะห์แบบรวดเร็ว; สมการเทียบมาตรฐาน; สเปกโตรสโกปี; เทคนิคโครมาโตกราฟีของเหลวสมรรถนะสูง; สารชีวโมกุล.
Ano: 2014 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5753
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