Evaluation of barley grass as a potential source of some nutritional substances

• Published in: Czech Journal of Food Sciences 2007-01, Vol.25 (2), p.65-72
• Main Authors: Paulickova, I.,Vyzkumny Ustav Potravinarsky, Prague (Czech Republic), Ehrenbergerova, J.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic), Fiedlerova, V.,Vyzkumny Ustav Potravinarsky, Prague (Czech Republic), Gabrovska, D.,Vyzkumny Ustav Potravinarsky, Prague (Czech Republic), Havlova, P.,Vyzkumny Ustav Pivovarsky a Sladarsky, Brno (Czech Republic), Holasova, M.,Vyzkumny Ustav Potravinarsky, Prague (Czech Republic), Kopacek, J.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic), Ouhrabkova, J.,Vyzkumny Ustav Potravinarsky, Prague (Czech Republic), Pinkrova, J.,Vyzkumny Ustav Potravinarsky, Prague (Czech Republic), Rysova, J.,Vyzkumny Ustav Potravinarsky, Prague (Czech Republic), Vaculova, K.,Zemedelsky Vyzkumny Ustav, Kromeriz (Czech Republic), Winterova, R.,Vyzkumny Ustav Potravinarsky, Prague (Czech Republic)
• Format: Article
• Language: English
• Subjects: ACIDE AMINE; ACIDE ASCORBIQUE; ACIDE FERULIQUE; ACIDO ASCORBICO; ACIDO FERULICO; ACTIVIDAD ENZIMATICA; ACTIVITE ENZYMATIQUE; AGE; AMINO ACIDS; AMINOACIDOS; ANTIOXIDANTES; ANTIOXIDANTS; ANTIOXYDANT; ASCORBIC ACID; BARLEY; barley grass; CARBOHIDRATOS; CARBOHYDRATES; CATALASA; CATALASE; CEBADA; CONGELACION; CONGELATION; CONTENIDO DE MATERIA SECA; CONTENIDO PROTEICO; CULTIVOS ALIMENTICIOS; DRY MATTER CONTENT; EDAD; ENZYME ACTIVITY; FERULIC ACID; FOOD CROPS; FOOD PROCESSING; FORRAJE VERDE; FOURRAGE VERT; FREEZE DRYING; FREEZING; FRUCTOSA; FRUCTOSE; GALACTOSA; GALACTOSE; GLUCIDE; GLUCOSA; GLUCOSE; GRAMINEAS; GRAMINEE; GRASSES; GREEN FEED; HORDEUM VULGARE; http://www.fao.org/aos/agrovoc#c_1300; http://www.fao.org/aos/agrovoc#c_1380; http://www.fao.org/aos/agrovoc#c_15881; http://www.fao.org/aos/agrovoc#c_186; http://www.fao.org/aos/agrovoc#c_2398; http://www.fao.org/aos/agrovoc#c_24091; http://www.fao.org/aos/agrovoc#c_2604; http://www.fao.org/aos/agrovoc#c_27933; http://www.fao.org/aos/agrovoc#c_3017; http://www.fao.org/aos/agrovoc#c_3090; http://www.fao.org/aos/agrovoc#c_3091; http://www.fao.org/aos/agrovoc#c_3118; http://www.fao.org/aos/agrovoc#c_3166; http://www.fao.org/aos/agrovoc#c_3287; http://www.fao.org/aos/agrovoc#c_3362; http://www.fao.org/aos/agrovoc#c_3374; http://www.fao.org/aos/agrovoc#c_33987; http://www.fao.org/aos/agrovoc#c_342; http://www.fao.org/aos/agrovoc#c_3662; http://www.fao.org/aos/agrovoc#c_37969; http://www.fao.org/aos/agrovoc#c_511; http://www.fao.org/aos/agrovoc#c_5278; http://www.fao.org/aos/agrovoc#c_6171; http://www.fao.org/aos/agrovoc#c_6251; http://www.fao.org/aos/agrovoc#c_661; http://www.fao.org/aos/agrovoc#c_7495; http://www.fao.org/aos/agrovoc#c_8157; http://www.fao.org/aos/agrovoc#c_8168; http://www.fao.org/aos/agrovoc#c_823; http://www.fao.org/aos/agrovoc#c_8488; HUMAN NUTRITION; JUGO DE HORTALIZAS; JUS DE LEGUME; LIOFILIZACION; LYOPHILISATION; Monosaccharides; NUTRICION HUMANA; nutrition; NUTRITION HUMAINE; NUTRITIVE VALUE; ORGE; Phenols; Plant growth; PLANTE ALIMENTAIRE; POLIFENOLES; POLYPHENOL; POLYPHENOLS; PRESERVACION; PRESERVATION; PROCESAMIENTO DE ALIMENTOS; PROTEIN CONTENT; RENDEMENT; RENDIMIENTO; Saccharides; SACCHAROSE; SUCROSA; SUCROSE; Sulfur; SUPEROXIDE DISMUTASE; SUPEROXIDO DISMUTASA; SUPEROXYDE DISMUTASE; TENEUR EN MATIERE SECHE; TENEUR EN PROTEINES; TRAITEMENT DES ALIMENTS; VALEUR NUTRITIVE; VALOR NUTRITIVO; VARIEDADES; VARIETE; VARIETIES; VEGETABLE JUICES; Vitamin C; vitamins; YIELDS
• ISSN: 1212-1800; 1805-9317
• DOI: 10.17221/754-cjfs

Barley green matter was analysed for the contents of vitamin C, total polyphenols, phenolic compounds, proteins, amino acids and saccharides; the activity of catalase was also determined. The concentrations of vitamin C, total polyphenols and ferulic acid decreased with the age of barley plants, whereas the variety had no pronounced effect. Vitamin C concentrations between 0.107-6.357 g/kg DM, total polyphenols between 17.167-35.559 g/kg DM and ferulic acid between 0-5.916 g/kg DM were found. Catalase activity amounted to 4.5-29.7 TSU. The monosaccharide profile showed high concentrations of glucose (15.40-88.40 g/kg DM) and fructose (37.60-81.40 g/kg DM) which decreased with the plant growth. Saccharose and galactose concentrations were low, ranging between 0-7.70 g/kg DM and 3.70-5.30 g/kg DM, respectively. The total amino acid concentration decreased with the plant age. High concentrations of aspartic (15.232-28.682 g/kg DM) and glutamic acids (16.694-35.526 g/kg DM), as well as minimal concentrations of sulphur amino acids could be noted. The highest catalase activity was found in the early growth phase (18.5-35.1 TSU). The yield of juice pressed out from frozen green matter amounted to 68%. The juice was preserved by fluid drying, freeze drying and freezing. In respect to folates and total polyphenols contents as well as the antioxidant activity, freezing appears the most suitable procedure for preserving.