کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7585529 | 1492038 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determination of main fruits in adulterated nectars by ATR-FTIR spectroscopy combined with multivariate calibration and variable selection methods
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کلمات کلیدی
Oxalic acid (PubChem CID: 971)l-Ascorbic acid (PubChem CID: 54670067)Methylene blue (PubChem CID: 6099)Sodium hypochlorite (PubChem CID: 23665760)Phenolphthalein (PubChem CID: 4764)d-Glucose (PubChem CID: 5793) - D-گلوکز (PubChem CID: 5793)Ethanol (PubChem CID: 702) - اتانول (PubChem CID: 702)Acetone (PubChem CID: 180) - استون (PubChem CID: 180)Variable selection - انتخاب متغیرMultivariate analysis - تحلیل چندمتغیرهFood fraud - تقلب غذاییMid-infrared spectroscopy - طیف سنجی نیمه مادون قرمزSodium hydroxide (PubChem CID: 14798) - هیدروکسید سدیم (PubChem CID: 14798)Potassium chloride (PubChem CID: 4873) - کلرید پتاسیم (PubChem CID: 4873)Chemometrics - کمومتریکس
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Grape, orange, peach and passion fruit nectars were formulated and adulterated by dilution with syrup, apple and cashew juices at 10 levels for each adulterant. Attenuated total reflectance Fourier transform mid infrared (ATR-FTIR) spectra were obtained. Partial least squares (PLS) multivariate calibration models allied to different variable selection methods, such as interval partial least squares (iPLS), ordered predictors selection (OPS) and genetic algorithm (GA), were used to quantify the main fruits. PLS improved by iPLS-OPS variable selection showed the highest predictive capacity to quantify the main fruit contents. The selected variables in the final models varied from 72 to 100; the root mean square errors of prediction were estimated from 0.5 to 2.6%; the correlation coefficients of prediction ranged from 0.948 to 0.990; and, the mean relative errors of prediction varied from 3.0 to 6.7%. All of the developed models were validated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 254, 15 July 2018, Pages 272-280
Journal: Food Chemistry - Volume 254, 15 July 2018, Pages 272-280
نویسندگان
Carolina Sheng Whei Miaw, Camila Assis, Alessandro Rangel Carolino Sales Silva, Maria LuÃsa Cunha, Marcelo Martins Sena, Scheilla Vitorino Carvalho de Souza,