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Stezzano, Italy

Redaelli R.,Maize Research Unit | Alfieri M.,Maize Research Unit | Cabassi G.,Center for Dairy and Fodder Crops Research
Talanta | Year: 2016

The feasibility of predicting total antioxidant capacity (TAC) in maize flours by NIRS was assessed in a set of 391 samples, comprising Italian and public inbred lines, F1 seeds, commercial hybrids and traditional varieties, using ABTS direct assay as reference value. A subset of 81 samples were also used to test the development of a calibration model for soluble phenolic content (SPC), whereas 101 samples were analysed by DPPH assay. The models obtained for TAC by ABTS in different genetic materials were characterized by a good stability of the regression coefficients and showed a RER>2, allowing to develop both global and specific predictive models for this trait. On the contrary, only specific models were developed for SPC, and no predictive models were obtained for TAC by DPPH assay. These results demonstrated that NIR spectroscopy could be applied efficiently to the screening of the genotypes currently selected for the food industry. © 2016 Elsevier B.V. Allrightsreserved.


Redaelli R.,Maize Research Unit | Dimberg L.,Swedish University of Agricultural Sciences | Germeier C.U.,Julius Kuhn Institute | Berardo N.,Maize Research Unit | And 2 more authors.
Euphytica | Year: 2015

A broad spectrum of European oat genetic resources representing crop wild relatives, landraces, traditional, obsolete and modern cultivars, was observed in a multi-location field study all over Europe. Here analyses results of 173 accessions for tocopherols and tocotrienols, and of 137 accessions for avenanthramides from groat samples are reported. Genotype, environment and interaction effects, as observed on a set of standard cultivars, were highly significant for most of the targeted traits. Environment effects were often dominant. Higher contents of these compounds than previously reported in oat have been frequently found. High values of α-tocotrienol and avenanthramides were detected in grains of Avena strigosa. Also few cultivars of A. sativa reached more than 100 mg kg−1 α-tocotrienol. Contents of ß, γ- and δ-tocols were low; the latter often close to the detection limits. Presence of avenanthramides in Avena species other than A. sativa is shown for the first time. © 2015 Springer Science+Business Media Dordrecht


Hartings H.,Maize Research Unit | Lazzaroni N.,Maize Research Unit | Balconi C.,Maize Research Unit
Maydica | Year: 2013

Developing maize plants with improved kernel quality traits involves the ability to use existing genetic variation and to identify and manipulate commercially important genes. This will open opportunities for designing novel variation in grain composition and will provide the basis for the development of the next generation of specialty maize. This paper provides an overview of current knowledge on the identification and exploitation of genes affecting the composition, development, and structure of the maize kernel with particular emphasis on pathways relevant to endosperm growth and development, differentiation of starch-filled cells, and biosynthesis of starches, storage proteins, lipids, and carotenoids. The potential that the new technologies of cell and molecular biology will provide for the creation of new variation in the future are also indicated and discussed.

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