Non-destructive assessment of the oxidative stability of intact macadamia nuts during the drying process by near-infrared spectroscopy

被引：12

作者：

Carvalho, Livia C. ^{[1
]}

Leite, Marcondes L. ^{[2
,4
]}

Morais, Camilo L. M. ^{[3
]}

Lima, Kassio M. G. ^{[4
]}

Teixeira, Gustavo H. A. ^{[5
]}

机构：

[1] Univ Estadual Paulista, Fac Ciencias Farmaceut FCFAR, Dept Alimentos & Nutr, UNESP, Campus Araraquara,Rodovia Araraquara Jau, BR-14800903 Araraquara, SP, Brazil

[2] Inst Fed Educ Ciencia & Tecnol Maranhao IFMA, Campus Sao Luis Maracana,Ave Curios S-N, BR-65095460 Sao Luis, Maranhao, Brazil

[3] Univ Cent Lancashire, Sch Pharm & Biomed Sci, Preston PR1 2HE, Lancs, England

[4] Univ Fed Rio Grande do Norte UFRN, Inst Quim Quim Biol & Quimiometria, Ave Senador Salgado Filho 3000, BR-59078970 Natal, RN, Brazil

[5] Univ Estadual Paulista, UNESP, FCAV, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil

来源：

LWT-FOOD SCIENCE AND TECHNOLOGY | 2019年 / 103卷

关键词：

Peroxide value; Acidity index; Macadamia integrifolia Maiden & Betche principal component analysis; QUALITY; OIL; MOISTURE;

D O I：

10.1016/j.lwt.2018.12.056

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

We have developed a rapid non-destructive method to assess the oxidative stability of intact macadamia nuts using near-infrared spectroscopy (NIRS). Intact macadamia nuts of the cultivars HAES 344 'Kau', HAES 660 'Keaau', IAC 4-12 B, and IAC Campinas B were harvested and immediately oven-dried for 4 days at 30 degrees C, 2 days at 40 degrees C, and 1 day at 60 degrees C to achieve 1.5% kernel moisture content. At each drying step nuts were withdrawn and their moisture content, peroxide value (PV), and acidity index (AI) determined. The best partial least square model for PV prediction was obtained using the Savitzky-Golay (SG) second derivative resulting in a standard error of prediction (SEP) of 0.55 meq.kg(-1) and a coefficient of determination (R-C(2)) of 0.57. The best AI prediction-model result was obtained using the SG second derivative (SEP = 0.14%, R-C(2) = 0.29). Based on the maximum quality limits of 3 meq.kg(-1) for PV and 0.5% for AI, the SEP values represented 18% and 28%, respectively. Therefore, the prediction method can be considered useful since the errors are lower than the quality limits. Thus, NIRS can be used to assess the oxidative stability of intact macadamia kernels.

引用

页码：101 / 107

页数：7

共 41 条

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