Sökning: "Vanillyl alcohol"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Vanillyl alcohol.

  1. 1. Microbial production of chemical building blocks from lignin

    Master-uppsats, Lunds universitet/Teknisk mikrobiologi

    Författare :Kevin Bertilsson; [2024]
    Nyckelord :Lignin; Green plastic; Vanillin; Microbial production; Applied microbiology; Biology and Life Sciences;

    Sammanfattning : Plastics, derived from fossil fuels, have raised considerable environmental concerns. This has prompted the search for sustainable and safer plastic precursors alternatives. One alternative explored in the present study is vanillin, a phenolic compound derived from lignin, an abundant and renewable natural polymer. LÄS MER

  3. 2. Catalytic synthesis of benign bisphenols

    Kandidat-uppsats, KTH/Kemi

    Författare :Victoria Chu; Emma Lundqvist; Hampus Hagelin; [2022]
    Nyckelord :Bisphenols; Vanillyl alcohol; Friedel-Crafts alkylation; Lewis acid catalysis; Sustainability; Bisfenoler; Vanillylalkohol; Friedel-Crafts alkylering; Lewissyra-katalys; Hållbarhet;

    Sammanfattning : This study analyzes the reactivity and selectivity of Friedel-Crafts alkylations using benzylic alcohols and phenols in the presence of a Lewis acid, to synthesize methoxylated bisphenols as a benign alternative to BPA. The degree of methoxylation on the electrophile appears to affect the yield of the reaction while the degree of methoxylation on the nucleophile appears to affect the selectivity. LÄS MER

  4. 3. A study of microbial biodegradation of a lignin monomer

    Master-uppsats, KTH/Skolan för bioteknologi (BIO)

    Författare :Caroline Nehvonen; [2017]
    Nyckelord :Yeast; Growth curve; Vanillyl alcohol; Thin-layer chromatography; HPLC; lignin biodegradation; vanillin;

    Sammanfattning : .... LÄS MER

  5. 4. Characterization of microbial growth in lignin-based residues and biodegradation of vanillin: : Optimizing factors for maximizing the extraction of a biodegradation compound of vanillin and investigating the potential for lipid accumulation.

    M1-uppsats, Högskolan i Gävle/Miljöteknik

    Författare :Oscar Rosales; [2017]
    Nyckelord :Yeast; vanillin biodegradation; vanillyl alcohol; lignin-based substrates; microbial lipid accumulation; Thin-layer chromatography;

    Sammanfattning : Vanillin (4-hydroxy-3methoxybenzaldehyde) is one of the most employed aromatic and flavoring additives in food and cosmetic industry. The industrial interest in vanillin could also apply to its biodegradation products. LÄS MER

  7. 5. Growth and biodegradation by Sporidiobolales yeasts in vanillin-supplemented medium

    Kandidat-uppsats, Högskolan i Gävle/Avdelningen för arbets- och folkhälsovetenskap

    Författare :Natalia González Gaarslev; [2017]
    Nyckelord :Sporobolomyces; Vanillin; Internal Transcribed Spacer ITS ; Thin layer chromatography TLC ; Neubauer’s chamber; Sporobolomyces; Vainillina; Espaciador Transcribible Interno ETI ; Cromatografia en capa fina CCF ; Cámara de Neubauer;

    Sammanfattning : Studies of biodegradation in lignins by basidiomycetes yeasts show the conversion of lignin in various degradation products among which vanillin, a valuable substance, suggested to be a strong inhibitor of both fermentation and growth of yeasts, stands. Sporidiobolales yeasts used in these experiments were aimed to be identified by their highly conserved ITS region as well as studied in vanillinsupplemented medium through, vanillin-supplemented plates, TLC and Neubauer’s chamber to find out which, among the several isolates tested, were the most resistant ones, understand how they take up vanillin and how their growth is affected by the presence of the phenolic compound. LÄS MER