The dynamics of vitamins C and E in barley products during malting Dabina–Bicka, I., Latvia Univ. of Agriculture, Jelgava (Latvia); Karklina, D., Latvia Univ. of Agriculture, Jelgava (Latvia); Rakcejeva, T., Latvia Univ. of Agriculture, Jelgava (Latvia) ...
Research for rural development : annual ... international scientific conference proceedings,
2010
16/2010
Journal Article
Barley is a key ingredient in beer production. The aim of the current research was to study the dynamics of vitamin C and vitamin E in flaky and hull-less barley grains during steeping, germinating, ...and kilning. The research was accomplished on hull-less barley (two lines – '3528' and '3537') and flaky barley selected in Latvia in 2009 with a germination capacity above 95%. The grains were steeped, germinated and kilned using traditional malt production technology. During research the vitamin content was analysed using standard methods: vitamin C by EN 14130:2003, and vitamin E by AOAC 971.30. The content of vitamin C increased during steeping in flaky barley grains till 0.23 mg 100 gE-1, but in hull-less barley grains: line '3537' till 0.47 mg 100 gE-1, and line '3528' till 0.30 mg 100 gE-1. During germination vitamin C content in flaky barley increased by 68%, in hull-less barley: line '3528' – by 82%, and line '3537' – by 57%. The content of vitamin C in the analysed malt samples was 0.35-0.38 mg 100 gE-1. The content of vitamin E in all barley samples was similar after grain steeping. The content of vitamin E was 3.9 times higher in flaky barley, but in hull-less barley lines: '3528' – 4.1, and '3537' – 4.5 times higher compared with its initial content after germination. After grain kilning, the content of vitamin E decreased in all barley grain samples. The results show that using some cultivars of hull-less barley for malt production, it is possible to obtain a higher content of vitamins C and E in the end-product.
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IZUM, KILJ, NUK, PILJ, PNG, SAZU, UL, UM, UPUK
Using adapted methods for balanced experiments with waterfowl, the content and the true digestibility of the amonoacids of hull-less barley have been established. The following contents of the ...essential amonoacids of a stocking lot of the forage have been established (g/kg DM): lysine-4.8, methionine-1.1, cystine-1.1, histidine-2.2, threonine-4.4, leucine- 6.8 and phenylalanine- 5.9. The coeffi cients of their true digestibility were 81.89, 84.06, 85.08, 90.62, 87.30, 76.38 and 75.96, respectively.
Three hull-less barleys, Washonupana (WSNP), Waxbar (WXB), and Bangsa (BGS), were fed to broiler chicks in 21% protein diets containing 0.5% cholesterol in replicate trials. A corn-based diet, with ...added cholesterol, served as a control. Alternate diets were supplemented with beta-glucanase (ENZ). beta-glucan content ranged from 4.9% to 6.1% and soluble dietary fiber (SDF) from 3.6% to 7.5% in the barleys. Data from the two trials were pooled for statistical analysis by the SAS General Linear Models procedure. In body weight gain, chicks fed WSNP-ENZ were lower (P less than 0.05) than all other treatments. The beta-glucanase supplement to the WXB and BGS barley tended to improve gains, but the differences were not significant for either barley. Feed to gain ratios were lowest (P less than 0.0001) for corn fed chicks and lower (P less than 0.05 to P less than 0.0001) for those fed the barley + ENZ diets compared to barley -ENZ. Chicks fed barley diets had lower (P less than 0.05) total serum cholesterol (TSC) and LDL-cholesterol than those fed corn diets, regardless of ENZ supplementation. For chicks on barley -ENZ diets, TSC levels for WSNP, WXB, and BGS were 146, 152, and 142 mg/dl respectively and for chicks on barley + ENZ diets, 218, 200, and 178 mg/dl. LDL-cholesterol levels followed the same trend and there was little difference in serum triglycerides. The BGS + ENZ lowered TSC 30% from the corn control compared to 10.7% and 18% for WSNP + ENZ and WXB + ENZ, suggesting additional hypocholesterolemic factors, possibly tocotrienol and SDF other than 1---3, 1---4 beta-D-glucans.
To select and release of adaptable and tolerant barley varieties to abiotic stress (heat, drought and salinity) and high-yielding and adaptable hulless barley varieties for moderate and warm zone, ...are used introduction varieties containing appropriate traits(high-yielding, resistance to diseases, high quality, and adaptable) in addition to national varieties. In this study, four barley nurseries from CIMMYT and ICARDA including: 4 observation nurseries, , HBSN( Hull-less Barley SN ) with 135 genotypes, INBON( International Naked Barley Observation Nursery ) with 97 genotypes, ISEBON(International Spring Early Barley Observation Nursery)with 82, SPII 08 with 82 genotypes , were evaluated . In overall, according to plant height and type, early maturity, resistance to diseases and lodging, tolerant to salinity and particularly grain yield 38 genotypes from HBSN , 60 genotypes from INBON, 14 genotypes from ISEBON and 20 genotypes from SPII 07 were selected and conducted to preliminary experiments of hulled, hulless barley and salinity tolerance of moderate and warm zone in next year.
