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Aineistot 61-66 / 66
Antioxidant activities and polyphenolic identification by UPLC-MS/MS of autoclaved brewers’ spent grain
<div><p>Autoclave treatment (AT) modified the dietary fiber composition of brewers' spent grain (BSG), impacting its techno-processing properties. However, its impact on antioxidant properties and stability of polyphenolic ...
Study of the sterile conk of Inonotus obliquus using 13C CPMAS NMR and FTIR spectroscopies coupled with multivariate analysis
<p>The sterile conk caused by the infection of the basidiomycete Inonotus obliquus (Chaga) is an important source of bioactive compounds. However, its structure and biochemistry are only generally understood. Solid state <sup>13</sup>C NMR and FTIR spectroscopy have been utilized for the first time to investigate the sterile conk with non-invasive methods. The application of multivariate data analysis techniques and spectral distance algorithm to the obtained datasets showed clear distinction between the outer and inner layers of the sterile conk. Moreover, the sterile conk bark, compared to the inner layers, was spectroscopically more similar to wood tissues. The fungal tissue was proven to be concentrated below the bark. The similarity of the sterile conk inner layers to both decayed wood and hyphae of I. obliquus was shown by the multivariate data analysis of both spectra datasets. The spectroscopic data indicated lack of lignin degradation in the heart rot, except for demethoxylation, and a slight preference for hemicellulose degradation. Therefore, the results obtained suggest that the classification of I. obliquus as preferential lignin degrader (white-rot fungus) should be revised and clarified by further studies.<br></p>...
Green technologies for production of oils rich in n-3 polyunsaturated fatty acids from aquatic sources
<p>Fish and algae are the major sources of n-3 polyunsaturated fatty acids (n-3 PUFAs). Globally, there is a rapid increase in demand for n-3 PUFA-rich oils. Conventional oil production processes use high temperature and ...
Quality of Protein Isolates and Hydrolysates from Baltic Herring (Clupea harengus membras) and Roach (Rutilus rutilus) Produced by pH-Shift Processes and Enzymatic Hydrolysis
Fractionation is a potential way to valorize under-utilized fishes, but the quality of the resulting fractions is crucial in terms of their applicability. The aim of this work was to study the quality of protein isolates ...
Human milk metabolome is associated with symptoms of maternal psychological distress and milk cortisol
<p>The composition of human milk is subject to considerable
variation, but the effects of maternal stress are largely unknown. We
studied differences in human milk metabolome between Finnish mothers (n = 120,
secretors) with symptoms of prenatal symptoms of psychological distress
and milk cortisol concentrations. Human milk samples acquired at
2.5 months postpartum were analyzed using targeted <sup>1</sup>H NMR metabolomics.
Self-reported scores for depression (EPDS), overall anxiety (SCL-90),
and pregnancy-related anxiety (PRAQ) were used to evaluate psychological
distress. Prenatal psychological distress was positively associated
with concentrations of short-chain fatty acids, caprate, and
hypoxanthine (q < 0.0012). Milk cortisol was positively associated with lactate concentration (q < 0.05).
Changes in the human milk metabolome were shown to be associated with
maternal psychological distress and concentration of milk cortisol in a
dissimilarly, suggesting alterations in bacterial and energy metabolism
of the mother, respectively.</p>...
Effect of oat β-glucan of different molecular weights on fecal bile acids, urine metabolites and pressure in the digestive tract – A human cross over trial
<p>While the development of oat products often requires altered molecular weight (MW) of β-glucan, the resulting health implications are currently unclear. This 3-leg crossover trial (n = 14) investigated the effects of ...