Characterisation of Hulled Oat Grain Physical and Biochemical Parameters Significant for Dietary Products/ Plçkðòaino Auzu Graudu Raksturojums Pçc Diçtisku Produktu Raþoðanai Nozîmîgâm Fizikâlâm Un Íîmiskâm Pazîmçm

• Published in: Proceedings of the Latvian Academy of Sciences. Section B, Natural Sciences Natural Sciences, 2014-08, Vol.68 (3), p.166-173
• Main Authors: Bleidere, Māra, Timbare, Regīna, Bobere, Natalija, Paklone, Madara, Jākobsone, Ida, Zute, Sanita
• Format: Article
• Language: English
• Subjects: Avena sativa; physical and chemical traits; scavenging activity; total phenolic content; α-tocopherol
• ISSN: 1407-009X; 2255-890X; 1407-009X
• DOI: 10.2478/prolas-2014-0019

The objectives of the study were to investigate the variability of oat (Avena sativa L.) grain physical traits and chemical composition and to determine relationships between traits. Field experiments including five hulled oat genotypes were carried out at the State Stende Cereal Breeding Institute for two seasons during 2010-2011. Variation of traits was mainly determined by genotype (ω = 53 - 88%), with the min/max values for 1000 kernel weight 32.4/36.5 g, test weight 470.0/507.9 g·L , hull content 215.4/265.6 g·kg , crude protein 110.0/124.9 g·kg , starch 456.9/483.0 g·kg , β-glucans 28.1/36.6 g·kg and crude fat 46.2/60.0 g·kg . Oat variety ‘Arta’ had the highest test weight (507 g·L ) and contents of crude protein (124.9 g·kg ), β-glucans (36.5 g·kg ), α-tocopherol (7.8 mg·kg ), average crude fat (55.5 g·kg ) and total phenolics (113.9 mg gallic acid equivalents/GAE 100 g DM) in the grain. Expression of traits significantly depended on meteorological conditions in the specific year. In both years of investigation there were significant (p < 0.05) positive correlations between contents of β-glucans and crude fat, and negative correlation of β-glucans with starch content, total phenolics and antiradical scavenging activity. Nozîmîgs raksturlielums, kas jâòem vçrâ, izmantojot auzas (Avena sativa L.) specifisku diçtisku pârtikas produktu raþoðanai, ir atbilstoða graudu kvalitâte. Pçtîjuma mçríis bija izpçtît plçkðòaino auzu (Avena sativa L.) graudu fizikâlo pazîmju un íîmiskâ sastâva mainîbu un analizçt korelatîvâs sakarîbas starp pazîmçm. Lauka izmçìinâjumi ar pieciem plçkðòainajiem auzu paraugiem tika iekârtoti Valsts Stendes graudaugu selekcijas institûtâ 2010. un 2011. gadâ. 1000 graudu masas (32.4-36.5 g), tilpummasas (470.0-507.9 g·L ) un plçkðòainîbas (215.4-265.6 g·kg ), kopproteîna (110.0-124.9 g·kg ), cietes (456.9-483.0 g·kg ), ω-glikânu (28.1-36.6 g·kg ), koptauku (46.2-90.0 g·kg ) mainîba bija bûtiska (p < 0.05), kuru galvenokârt ietekmçja genotips (ω = 53-88%). Pazîmju mainîbu bûtiski ietekmçja arî gada (meteoroloìisko apstâkïu) kâ faktora ietekme. Auzu ðíirnei ‘Arta’ bija augstâkâ tilpummasa (507.9 g·L ), kopproteîns (124.9 g·kg ), α-tokoferola saturs (7.8 mg·kg ), paaugstinâts ω-glikânu (36.5 g·kg ) un vidçjs koptauku saturs (55.5 g·kg ) un kopçjais fenolu saturs (113.9 mg GAE (gallijskâbes ekvivalents) 100 g ) graudos. Abos pçtîjuma gados ω-glikâniem konstatçja pozitîvu un bûtisku (p < 0.05) sakarîbu ar koptauku saturu, bet negatîvu korel