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Rosicka-Kaczmarek J, Stasiuk M, Nebesny E, Komisarczyk A. Fluorimetric studies of the interactions of wheat puroindolines with polar lipids on the surface starch granules. J Cereal Sci 2015. [DOI: 10.1016/j.jcs.2015.10.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Apprich S, Tirpanalan Ö, Hell J, Reisinger M, Böhmdorfer S, Siebenhandl-Ehn S, Novalin S, Kneifel W. Wheat bran-based biorefinery 2: Valorization of products. Lebensm Wiss Technol 2014. [DOI: 10.1016/j.lwt.2013.12.003] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Simas-Tosin FF, Barraza RR, Maria-Ferreira D, Werner MFDP, Baggio CH, Wagner R, Smiderle FR, Carbonero ER, Sassaki GL, Iacomini M, Gorin PAJ. Glucuronoarabinoxylan from coconut palm gum exudate: chemical structure and gastroprotective effect. Carbohydr Polym 2014; 107:65-71. [PMID: 24702919 DOI: 10.1016/j.carbpol.2014.02.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 02/06/2014] [Accepted: 02/07/2014] [Indexed: 10/25/2022]
Abstract
A glucuronoarabinoxylan (CNAL) was extracted with 1% aq. KOH (25°C) from Cocos nucifera gum exudate. It had a homogeneous profile on HPSEC-MALLS-RI (Mw 4.6 × 10(4)g/mol) and was composed of Fuc, Ara, Xyl, GlcpA (and 4-O-GlcpA) in a 7:28:62:3 molar ratio. Methylation data showed a branched structure with 39% of non-reducing end units, 3-O-substituted Araf (8%), 3,4-di-O- (15%), 2,4-di-O- (5%) and 2,3,4-tri-O-substituted Xylp units (17%). The anomeric region of CNAL (13)C NMR spectrum contained 9 signals, indicating a complex structure. The main chain of CNAL was characterized by analysis of a Smith-degraded polysaccharide. Its (13)C NMR spectrum showed 5 main signals at δ 101.6, δ 75.5, δ 73.9, δ 72.5, and δ 63.1 that were attributed to C-1, C-4, C-3, C-2 and C-5 of (1→4)-linked β-Xylp-main chain units, respectively. CNAL exhibited gastroprotective effect, by reducing gastric hemorrhagic lesions, when orally administered (1 and 3mg/kg) to rats prior to ethanol administration.
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Affiliation(s)
- Fernanda F Simas-Tosin
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19046, CEP 81531-990 Curitiba, PR, Brazil
| | - Ruth R Barraza
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19046, CEP 81531-990 Curitiba, PR, Brazil
| | - Daniele Maria-Ferreira
- Departamento de Farmacologia, Universidade Federal do Paraná, CP 19046, CEP 81531-990 Curitiba, PR, Brazil
| | - Maria Fernanda de P Werner
- Departamento de Farmacologia, Universidade Federal do Paraná, CP 19046, CEP 81531-990 Curitiba, PR, Brazil
| | - Cristiane H Baggio
- Departamento de Farmacologia, Universidade Federal do Paraná, CP 19046, CEP 81531-990 Curitiba, PR, Brazil
| | - Ricardo Wagner
- Departamento de Medicina Forense e Psiquiatria, Universidade Federal do Paraná, CP 19046, CEP 81531-990 Curitiba, PR, Brazil
| | - Fhernanda R Smiderle
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19046, CEP 81531-990 Curitiba, PR, Brazil
| | - Elaine R Carbonero
- Departamento de Química, Universidade Federal de Goiás, CEP 75702-040 Catalão, GO, Brazil
| | - Guilherme L Sassaki
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19046, CEP 81531-990 Curitiba, PR, Brazil
| | - Marcello Iacomini
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19046, CEP 81531-990 Curitiba, PR, Brazil.
| | - Philip A J Gorin
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19046, CEP 81531-990 Curitiba, PR, Brazil.
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Bian J, Peng F, Peng XP, Peng P, Xu F, Sun RC. Structural features and antioxidant activity of xylooligosaccharides enzymatically produced from sugarcane bagasse. BIORESOURCE TECHNOLOGY 2013; 127:236-41. [PMID: 23131647 DOI: 10.1016/j.biortech.2012.09.112] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 08/26/2012] [Accepted: 09/28/2012] [Indexed: 05/11/2023]
Abstract
Xylooligosaccharides (XOS) were prepared from xylan-rich hemicelluloses isolated by potassium hydroxide from sugarcane bagasse by hydrolysis with crude xylanase secreted by Pichia stipitis. Hydrolysis for 12h produced XOS with a maximum yield of 31.8%, equivalent to 5.29 mg mL(-1) in the hydrolyzate. XOS with degrees of polymerization (DP) from 2 to 4 (xylobiose, xylotriose, and xylotetraose) were the major components in the hydrolysates, whereas the oligosaccharides with higher DP of 5-6 (xylopentaose and xylohexose) showed a constant low level. FT-IR and NMR ((1)H, (13)C, HSQC) demonstrated that XOS contained Araf and 4-O-Me-α-D-GlcpA residues. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay showed that the XOS exhibited concentration-dependent antioxidant activity. The results obtained indicate that the XOS produced from sugarcane bagasse can be employed in food-related applications.
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Affiliation(s)
- Jing Bian
- Institute of Biomass Chemistry and Technology, Beijing Forestry University, Beijing 100083, China
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