Browsing by Author "SANMARTIN, R"

Now showing 1 - 5 of 5
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    CATALYZED FLASH PRETREATMENTS IMPROVE SACCHARIFICATION OF PINE (PINUS-RADIATA) SAWDUST
    (1989) HOHLBERG, AI; AGUILERA, JM; AGOSIN, E; SANMARTIN, R
    Physico-chemical pretreatments with steam explosion were used to improve digestion in vitro of pine sawdust. Maximum reducing sugar yields (g/100 g substrate) obtained after hydrolysis of pretreated samples were: 14 g for steam-exploded sawdust, 26 g for SO2 impregnated steam-exploded samples and 32.5 g for CO2 steam-exploded samples. Increase in digestibility is related to the catalytic effect of cooking at high temperatures with dissolved acids formed from the gases, as well as to the physical effect of the discharge during the explosion. Pretreatment with SO2 was the most efficient process for hydrolyzing hemicelluloses, as determined by the high content of soluble reducing sugars present in the washing liquor.
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    CHARACTERISTICS OF GUINDILLA (VALENZUELA-TRINERVIS BERT) OIL
    (1986) AGUILERA, JM; FRETES, A; SANMARTIN, R
    Seed of Guindilla (Valenzuela trinervis Bert.) and its oil were characterized. On a dry weight basis, the seed consists of 56% hull and seed coat and 44% cotyledon, containing about 67.0% lipids. The main fatty acids are: 62.3% oleic, 12.9% gadoleic, 10.1% linoleic and 9.6% palmitic. Physical properties of oil, expressed by hand press, include: melting point, -6 to -2 C; iodine value, 75.1; saponification value, 192; and unsaponifiable matter, 0.8%.
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    COMPARISON OF AERIAL AND SUBMERGED SPORE PROPERTIES FOR TRICHODERMA-HARZIANUM
    (ELSEVIER SCIENCE BV, 1995) MUNOZ, GA; AGOSIN, E; COTORAS, M; SANMARTIN, R; VOLPE, D
    Spores produced by aerial mycelium of Trichoderma harzianum P1, a potential biocontrol agent, showed both higher UV-resistance and longer viability after storage than those produced within liquid media ('submerged' spores). Aerial spores were produced in clusters, had a thick outer wall, and few organelles. Trehalose content was significantly lower than in submerged spores. Conversely, submerged spores were mostly collapsed, not clustered and larger than aerial spores. They had many cytoplasmic organelles and a thinner outer wall. These spores were hydrophilic, while aerial ones were highly hydrophobic. On analysis, the latter was related with the presence of a single major low molecular mass protein (< 14 kDa). This protein was nearly absent in extracts from walls of submerged spores but was found in the extracellular medium. An involvement of the outer wall layer in the resting state of T. harzianum spores is proposed.
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    EFFECT OF CELLULASE PRETREATMENTS ON RED ALGAE AGAR EXTRACTABILITY
    (1988) SANMARTIN, R; AGUILERA, JM; HOHLBERG, AI
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