Encapsulation of Trichoderma harzianum with nanocellulose/carboxymethyl cellulose nanocomposite

Brondi, Mariana G.; Florencio, Camila; Mattoso, L. H. C.; Ribeiro, Cauê; Farinas, Cristiane S.

doi:10.1016/j.carbpol.2022.119876

Cited by 22 publications

(7 citation statements)

References 56 publications

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“…Also, commercial hydrolyzed CNC (Synth Brazil) differs from these CNCs as a consequence of their low thermal stability which is detected from the beginning of the analyzed temperature ( ca . 25 °C) 101 . CNC 40% and CNC 64% also are comparable to those CNCs obtained through enzymatic hydrolysis using sugarcane bagasse as a source 102 and the obtained CNC from Date Palm waste 103 …”

Section: Resultssupporting

confidence: 73%

“…Therefore, the extracted CNC from SUP cups behaves in a very similar way to CNC which has been used for nanocomposites 97 including food packaging films, biomedical equipment, thermal resistive materials, 103 protecting and delivering microbial inoculants for agricultural applications 101 with improved properties; 102 this is the reason why herein this CNC is proposed to be grafted onto MMA monomer.…”

Section: Resultsmentioning

confidence: 99%

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CNCs extraction from single‐use cups: effects of grafting it onto MMA monomer

Juárez‐Méndez

Palma‐Ramírez

Brachetti-Sibaja

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND: The difficulty of separating fiber from polyolefin coatings of single-use plastic (SUP) cups for cold (carbonated) or hot (coffee) drinks, has led us to investigate a recycling method to obtain new high-performance materials. The present work relates to valorization of ICEE S.A. de C.V. cups into crystalline nanocellulose (CNC), while studying the effects on the structural, thermal, morphological and particle size properties in dependence of the acid hydrolysis concentration (40 and 64% v/v) employing sulfuric acid to remove amorphous cellulose.RESULTS: On the basis of results, optimal CNC was found at 64% v/v concentration obtaining ribbon-like morphologies rich in cellulose types I⊍ (27%) and II (45.1%) of triclinic and monoclinic structures, respectively, high crystallinity percentage (91%) and nanosize scale (26.70 nm). CNC was successfully grafted through the C 2 in cellulose onto the methyl methacrylate (MMA) monomer to obtain PMMA-g-CNC, considering different concentrations (5, 10, 20 and 30 wt%) of CNC. A reduction of crystallinity % was found when CNC is grafted onto MMA owing to the amorphous nature of the poly(methyl methacrylate) (PMMA). However, this is not a limitation.CONCLUSIONS: PMMA-g-CNC samples displayed high thermal stability (345 °C) and nanometric scale (165-260 nm), which have potential to be studied as reinforcement agents for incompatible polymers such as PMMA and poly(urethane) (PU) through Interpenetrating Polymer Networks. Preliminary mechanical studies indicated that PMMA-g-CNC systems are able to reinforce the tensile properties becoming the PMMA/PU into ductile materials. Specially, the MMA 90 CNC 10 system improved the strain four-fold compared to the pure PMMA/PU IPN.

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Section: Resultssupporting

confidence: 73%

Section: Resultsmentioning

confidence: 99%

CNCs extraction from single‐use cups: effects of grafting it onto MMA monomer

Juárez‐Méndez

Palma‐Ramírez

Brachetti-Sibaja

et al. 2023

J of Chemical Tech & Biotech

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“…Chlamydospore presence in larger amount in the biomass produced in cornmeal than in PDB medium is demonstrated also by the thermogravimetric analysis. To the best of our knowledge, thermogravimetric analysis has not been previously used for the characterization of the Trichoderma biomass containing spores -only for the characterization of different types of Trichoderma formulations, such as T. harzianum LQC-99 encapsulated in cellulose nanocrystals (CNC) or in nanocomposite of CNC with carboxymethyl cellulose (CMC) [53] or T. harzianum UPM40 encapsulated in Ca-alginatemontmorillonite clay beads [54].…”

Section: Resultsmentioning

confidence: 99%

Influence of Foliar Treatment with Suspensions Rich in Trichoderma Chlamydospores on Momordica charantia Physiology, Yield and Quality

Bala,

Șesan,

Oancea

et al. 2023

Preprint

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Several strategies promote phyllosphere colonization by soil-born Trichoderma plant-beneficial strains. One of these is foliar spraying with suspensions containing large amounts of chlamydospores – spores with a thick cell wall structure that makes them highly resistant to harsh environmental conditions. Trichoderma biomass was produced by cultivation on cornmeal medium and compared by microscopic and thermogravimetric analysis with the biomass produced in potato dextrose broth. Both analyses revealed higher chlamydospores content and thicker mycelium in the fungal biomass produced on cornmeal medium. The Trichoderma suspension rich in chlamydospores was sprayed on bitter gourd (Momordica charantia) leaves at two concentration levels, 106 and 108 ufc/ml. The effect of these treatments on plant physiological parameters, leaf photosynthetic pigments, polyphenol and flavonoid contents, antioxidant activity of leaves and fruits and yield was compared to the control (plants sprayed with water) and to the experimental treatment sprayed with 108 ufc propagules produced in potato dextrose broth. The effect of chlamydospore-rich suspensions on plant physiological parameters was more pronounced and long-lasting compared with the other treatments. The treatment with chlamydospore-rich suspension enhanced the accumulation of polyphenols and flavonoids in the leaves and fruits and increased the antioxidant activity. The application of the foliar treatment with Trichoderma suspensions did not modify the cytocompatibility of the extracts from fruits determined on L929 cells.

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“…The larger amount of chlamydospore in the biomass produced in cornmeal than in the PDB medium is also demonstrated by the thermogravimetric analysis. To the best of our knowledge, a thermogravimetric analysis has not been previously used for the characterization of the Trichoderma biomass containing spores-it was only used for the characterization of different types of Trichoderma formulations, such as T. harzianum LQC-99 encapsulated in cellulose nanocrystals (CNC) or in a nanocomposite of CNC with carboxymethyl cellulose (CMC) [56] or T. harzianum UPM40 encapsulated in Ca-alginatemontmorillonite clay beads [57].…”

Section: Parametermentioning

confidence: 99%

Influence of Foliar Treatment with Suspensions Rich in Trichoderma Chlamydospores on Momordica charantia Physiology, Yield, and Quality

Bala,

Șesan,

Oancea

et al. 2024

Horticulturae

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Several strategies promote phyllosphere colonization by soil-born Trichoderma plant-beneficial strains. One of these strategies is foliar spraying with suspensions containing large amounts of chlamydospores—spores with thick cell wall structures that make them highly resistant to harsh environmental conditions. Trichoderma biomass was produced by cultivation on a cornmeal medium and compared with the biomass produced on potato dextrose broth by microscopic and thermogravimetric analyses. The analyses revealed increased chlamydospore content and thermostability in the fungal biomass produced on the corn meal medium. The Trichoderma suspension rich in chlamydospores was sprayed on bitter gourd (Momordica charantia) leaves at two inoculant concentrations, 106 and 108 ufc/mL. The effect of these treatments on the plant physiological parameters, leaf photosynthetic pigments, polyphenol and flavonoid contents, antioxidant activities of the leaves and fruits, and yield was compared to the control (plants sprayed with water) and to the experimental treatment involving spraying with 108 ufc/mL of propagules produced in potato dextrose broth. The effect of chlamydospore-rich suspensions on plant physiological parameters was more pronounced and long-lasting compared with the other treatments. The treatment with chlamydospore-rich suspension enhanced the accumulation of polyphenols and flavonoids in the leaves (by 17% and 50%, respectively) and fruits (by 18% and 31%, respectively) and increased the antioxidant activity. The Trichoderma treatment increased the yield by +25.33–53.07%. The application of the foliar treatment with Trichoderma suspensions did not modify the cytocompatibility of the extracts from the fruits determined on the L929 cells.

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Encapsulation of Trichoderma harzianum with nanocellulose/carboxymethyl cellulose nanocomposite

Cited by 22 publications

References 56 publications

CNCs extraction from single‐use cups: effects of grafting it onto MMA monomer

CNCs extraction from single‐use cups: effects of grafting it onto MMA monomer

Influence of Foliar Treatment with Suspensions Rich in Trichoderma Chlamydospores on Momordica charantia Physiology, Yield and Quality

Influence of Foliar Treatment with Suspensions Rich in Trichoderma Chlamydospores on Momordica charantia Physiology, Yield, and Quality

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