The isolation of cellulose nanocrystals from pistachio shells via acid hydrolysis

Marett, Josh Michael; Aning, A.; Foster, E. Johan

doi:10.1016/j.indcrop.2017.09.039

Cited by 81 publications

(36 citation statements)

References 24 publications

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“…The formation of aggregates is common because of the strong hydrogen bonds between the molecules of nanocellulose . These hydrogen bonds between the nanocrystals overcome the repulsions of the negative surface charges, leading to the formation of networks and aggregates . Rod‐shaped cellulose nanocrystals were previously obtained from different sources, such as licuri, sago seed shells ( Cycas circinalis ), pistachio shells, and recycled paper …”

Section: Resultsmentioning

confidence: 99%

Development and application starch films: PBAT with additives for evaluating the shelf life of Tommy Atkins mango in the fresh‐cut state

Leal

Rosa

Penha

et al. 2019

J of Applied Polymer Sci

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In this study, formulations of cassava starch and poly(butylene adipate-co-terephthalate) flexible films were developed, with glycerol, coconut nanocellulose, annatto, and citric acid in different concentrations, as well as the effectiveness of the selected materials in fresh-cut mangoes storage was evaluated. The tensile strength of the different formulations varied from 1.90 (E4) to 6.65 MPa (E3c), and the strain varied from 206.31 (E1c) to 278.41% (E8); this variation was dependent on the percentage of the polymer matrix incorporated. The a w values of the formulations ranged from 0.396 (E2) to 0.569 (E3c). The Formulations E4 and E7 (with additives) presented good properties and were selected to condition mangoes. The micrographs of these films showed regions of micropores that can facilitate the diffusion of water from the packaged product to the surface, allowing decreases in moisture and a w , which is associated with higher color maintenance during fruit storage. E7 presented better barrier properties than E4 (lower values of WVP and water solubility) which may have influenced in a positive way to maintain the stability of the package in the studied period. E7 can be considered as a viable alternative for minimally processed mango storage.

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Section: Resultsmentioning

confidence: 99%

Development and application starch films: PBAT with additives for evaluating the shelf life of Tommy Atkins mango in the fresh‐cut state

Leal

Rosa

Penha

et al. 2019

J of Applied Polymer Sci

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“…CNMs are known to have robust mechanical properties with tensile moduli, usually ranging from 1 to 10 GPa and going as high as 86 GPa [19]. Furthermore, CNMs are capable of improving the strength of other materials when incorporated as a polymeric nanocomposite [16]. Thereby, tensile tests were performed on cellulose triacetate polymer nanocomposite membranes doped with each of the OTO-CNMs to characterize their mechanical properties.…”

Section: Tensile Testing Characterizationmentioning

confidence: 99%

“…In other words, while the strength of the materials was enhanced, elasticity remained unchanged. Polymeric materials can benefit from the additional crystalline strength and fibrous high-aspect-ratio materials provided as a support structure when incorporated throughout the material matrix [16,17].…”

Section: Tensile Testing Characterizationmentioning

confidence: 99%

“…As research in CNMs has developed, standardization for characterization has become well-defined, utilizing parameters such as chemical composition, material properties, and image analysis [6]. These parameters have been used to determine the CNMs produced from various sources of material such as banana and pistachio shells [16,17], and their quality.…”

Section: Introductionmentioning

confidence: 99%

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Oxone®-Mediated TEMPO-Oxidized Cellulose Nanomaterials form I and form II

et al. 2020

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The 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO) oxidation of cellulose, when mediated with Oxone® (KHSO5), can be performed simply and under mild conditions. Furthermore, the products of the reaction can be isolated into two major components: Oxone®-mediated TEMPO-oxidized cellulose nanomaterials Form I and Form II (OTO-CNM Form I and Form II). This study focuses on the characterization of the properties of OTO-CNMs. Nanoparticle-sized cellulose fibers of 5 and 16 nm, respectively, were confirmed through electron microscopy. Infrared spectroscopy showed that the most carboxylation presented in Form II. Conductometric titration showed a two-fold increase in carboxylation from Form I (800 mmol/kg) to Form II (1600 mmol/kg). OTO-CNMs showed cellulose crystallinity in the range of 64–68% and crystallite sizes of 1.4–3.3 nm, as shown through XRD. OTO-CNMs show controlled variability in hydrophilicity with contact angles ranging from 16 to 32°, within or below the 26–47° reported in the literature for TEMPO-oxidized CNMs. Newly discovered OTO-CNM Form II shows enhanced hydrophilic properties as well as unique crystallinity and chemical functionalization in the field of bio-sourced material and nanocomposites.

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“…Os materiais lignocelulósicos fibrosos, como as cascas de alimentos, vêm alavancando os estudos de isolamento e caracterização de fibras celulósicas. Alguns estudos destacam as cascas de ameixa (FRONE et al, 2017), amendoim (CHANDRA et al, 2016), arroz e café (COLLAZO-BIGLIARDI et al, 2018), banana (KHAWAS; DEKA, 2016), pistache (MARETT et al, 2017), pomelo (LIU et al, 2018), e tomate (JIANG; HSIEH, 2015).…”

Section: As Fibras Vegetaisunclassified

VALIDAÇÃO DE MÉTODO ANALÍTICO PARA QUANTIFICAÇÃO DE ÁCIDO ASCÓRBICO EM CAMU-CAMU (Myrciaria dubia) POR CROMATOGRAFIA LÍQUIDA DE ALTA EFICIÊNCIA

Pereira¹,

Cardoso²,

Zara³

et al. 2020

Investigação Científica No Campo Da Engenharia E Da Tecnologia De Alimentos

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The isolation of cellulose nanocrystals from pistachio shells via acid hydrolysis

Cited by 81 publications

References 24 publications

Development and application starch films: PBAT with additives for evaluating the shelf life of Tommy Atkins mango in the fresh‐cut state

Development and application starch films: PBAT with additives for evaluating the shelf life of Tommy Atkins mango in the fresh‐cut state

Oxone®-Mediated TEMPO-Oxidized Cellulose Nanomaterials form I and form II

VALIDAÇÃO DE MÉTODO ANALÍTICO PARA QUANTIFICAÇÃO DE ÁCIDO ASCÓRBICO EM CAMU-CAMU (Myrciaria dubia) POR CROMATOGRAFIA LÍQUIDA DE ALTA EFICIÊNCIA

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