NIRS and iSPA-PLS for predicting total anthocyanin content in jaboticaba fruit

作者：Torres Mariani Nathalia Cristina; de Almeida Teixeira Gustavo Henrique; Gomes de Lima Kassio Michell; Morgenstern Thayara Bittencourt; Nardini Viviani; Cunha Junior Luis Carlos

来源：Food Chemistry, 2015, 174: 643-648.

DOI：10.1016/j.foodchem.2014.11.008

• NIRS
• iSPA-PLS
• Wavelength selection
• Jaboticaba
• PLS

The aim of this study was to evaluate the potential of the successive projection algorithm for interval selection in partial least squares (iSPA-PLS) together with near-infrared reflectance spectroscopy (NIRS) as a feasible method to determine the total anthocyanin content (TAC) of intact jaboticaba fruit [Myrciaria jaboticaba (Vell.) O. Berg]. A total of 579 jaboticaba fruit were collected in three different harvests in three separate years (2011 and 2013). The correlation coefficients between the predicted and measured TAC were between 0.65 and 0.89, the RMSEPs were 7.55 g kg(-1) and 9.35 g kg(-1) (good accuracy) for prediction set, respectively. The RPD ratios for TAC were in the range of 2.57-3.19 with iSPA-PLS, which showed better predictive performance (acceptable precision). These results suggest that the NIR spectroscopy and wavelength selection (iSPA-PLS) algorithm can be used to determine the TAC of intact jaboticaba fruit.

• 出版日期2015-5-1