The Effect of Drying Methods on Water-Soluble Carbohydrates and Crude Protein Concentrations and Their Ratio in Two Perennial Ryegrass Cultivars

A - Papers appearing in refereed journals

Moscoso, C. J., Morgan, S. A. and Rivero, M. J. 2019. The Effect of Drying Methods on Water-Soluble Carbohydrates and Crude Protein Concentrations and Their Ratio in Two Perennial Ryegrass Cultivars. Agronomy. 9 (7), p. 383. https://doi.org/10.3390/agronomy9070383

AuthorsMoscoso, C. J., Morgan, S. A. and Rivero, M. J.
Abstract

The objective of this study was to assess the joint effect of perennial ryegrass cultivars and drying methods on concentrations of water-soluble carbohydrates (WSC) and crude protein (CP) and WSC/CP ratio. AberMagic AR1 and Expo AR1 forage were collected in December 2016, March, June, September and November 2017 and either oven-dried at 60 °C for 48h (OD_60), at 80 °C for 16h (OD_80), frozen at -80 °C for 48h then freeze-dried (-80_FD), or flash-frozen with liquid N then freeze-dried (LN_FD). Data were analyzed by ANOVA in a factorial design with cultivar and drying method as factors. AberMagic AR1 had between 9.0 to 31.5% higher WSC concentration than Expo AR1 in the four samplings. Freeze-drying preserved more WSC than oven-drying treatments (+22.7%), particularly in June. The CP concentration of Expo AR1 was higher only in December (+6.8%), and was 22.9 and 10.9% higher in OD_60 samples compared to LN_FD samples in December and November, respectively. The WSC/CP ratio varied in June, being greater in AberMagic AR1 (+36.1%). Drying method affected WSC/CP ratio in December, June and November where freeze-drying produced greater ratios. Drying techniques generated differences in WSC, CP and WSC/CP ratio, which may affect the accuracy of the estimated impacts of forages on productivity and N use efficiency.

KeywordsLolium perenne; Leaves; High sugar grasses; Oven-drying; Freeze-drying; Liquid nitrogen; Nitrogen use efficiency
Year of Publication2019
JournalAgronomy
Journal citation9 (7), p. 383
Digital Object Identifier (DOI)https://doi.org/10.3390/agronomy9070383
Open accessPublished as green open access
FunderBiotechnology and Biological Sciences Research Council
European Union
Funder project or codeS2N - Soil to Nutrition - Work package 2 (WP2) - Adaptive management systems for improved efficiency and nutritional quality
Agri-Tech Cornwall
Publisher's version
Output statusPublished
Publication dates
Online16 Jul 2019
Publication process dates
Accepted14 Jul 2019
PublisherMDPI
ISSN2073-4395

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