Pecan nutshell: morphological, chemical and thermal characterization

Andrade, Matheus de Prá; Piazza, Diego; Poletto, Matheus

doi:10.1016/j.jmrt.2021.05.106

Cited by 20 publications

(5 citation statements)

References 57 publications

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“…These results suggested that nutshells can be considered suitable options. Interesting, the results may be explained due to the chemical composition of substrates used since nutshells waste contains 55.7% of holocellulose (which is the mixture of cellulose and hemicellulose in the cell walls of plants) and 29.4% of lignin [10], while pine needles Brazilian Archives of Biology and Technology. Vol.66: e23210654, 2023 www.scielo.br/babt wastes have been reported that contains 27.8% of crude fiber [30] and a higher content of polyphenols that could affect the fungal growth.…”

Section: Discussionmentioning

confidence: 99%

“…Then, Figure 1 showed that P. ostreatus could grow in the presence of added nutshells with a radial growth rate of 0.684 cm d -1 , which was similar to the results obtained with barley straw extract agar. Albeit it is not easy to compare the structural and morphological conformation between nutshells and barley straw, they have similar chemical compositions, containing 55.7% [10] and 56.3% [34] of holocellulose, respectively, and referring in lignin content is 29.4% [10] and 19.2% [34], respectively.…”

Section: Discussionmentioning

confidence: 99%

“…The cell wall organic biomass composition differs between these agricultural wastes [8][9][10], being fungal strains beneficial because they can improve their bioavailability through solid-state fermentation (SSF). Fungi produce several lignocellulolytic enzymes with the ability to degrade lignin, which is known as white-rot fungi.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Use of Nutshells Wastes in the Production of Lignocellulolytic Enzymes by White-Rot Fungi

Ibarra-Islas

Hernández

Armenta

et al. 2023

Braz. arch. biol. technol.

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Agricultural wastes are an environmental and economic problem that countries must strive to solve as soon as possible. White-rot fungi can take advantage of these wastes through an efficient process involving the bioconversion of lignocellulosic materials. Therefore, this work has used pine needles (Pinus pseudostrobus) and nutshells (Carya illinoinensis), relevant wastes in Mexico, as substrates for growing three fungal strains (Ganoderma lucidum, Lentinula edodes, and Pleurotus ostreatus) on PDA plates supplemented with these materials. Besides, the capacity to produce lignocellulolytic enzymes by these three fungi through solid-state fermentation has been evaluated using pine needles and nutshells along with barley straw. The relevant results suggest that nutshells are a potential substrate for growing G. lucidum (mycelial growth rate of 0.758 cm d -1 ). Albeit pine needles waste has allowed G. lucidum growth (0.402 cm d -1 ), L. edodes and P. ostreatus growth on PDA supplemented plates were not observed. Further to this, nutshells or pine needles combined with barley straw were used as substrates through solid-state fermentation to produce lignocellulolytic enzymes (cellulase, xylanase, and laccase). G. lucidum presented the highest cellulase productivity (3.03 ± 0.34 IU/gdm·d) using nutshells and barley straw (BS_NS) as substrates, while HIGHLIGHTS• Nutshells and pine needles are potential substrates for solid-state fermentation.• G. lucidum was able to use nutshells and pine need as substrates for growing.• G. lucidum produced the highest yield of lignocellulolytic enzymes.• L. edodes and P. ostreatus produce cellulases and xylanases less efficiently that G. lucidum. G. lucidum presented the highest cellulase. Lentinula edodes, and Pleurotus ostreatus • Insert a highlight no longer than 85 characters.• G. lucidum can grow efficiently on nutshells or pine needles-PDA plates.•

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Use of Nutshells Wastes in the Production of Lignocellulolytic Enzymes by White-Rot Fungi

Ibarra-Islas

Hernández

Armenta

et al. 2023

Braz. arch. biol. technol.

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“…Pecan shells thermal degradation starts at 250°C and takes place in three steps and ıt shows that pecan shells have high extractive content (12.6 wt.%) and holocellulose (55.7 wt.%). The study showed that pecan shells are more suitable for joining with thermoplastic materials in matrix polymer composite applications that require a processing temperature below 220 °C [6]. In addition, Alvarez et al obtained wood-plastic composite by using degreased pecan walnut shell powder and PLA polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Determination of Mechanical Properties of Fruit Shell Powders Reinforced Wood Plastic Composite (WPC) Materials and Case Study for I-Type Snap-Fit Model

ERDEMİR,

ÖZKAN

2023

Politeknik Dergisi

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High quality material production has been among the work of many researchers in recent years. These materials, which are obtained mostly by the production of composite materials, enable the production of lighter, more durable and less costly products. Increasing environmental pollution in recent years, protection of natural resources and ensuring recycling have increased the importance of wood plastic composite material production. In this study, wood plastic composite material was obtained by using ABS (Acrylonitrile butadiene styrene) plastic material and six different fruit shell powders (walnut, pistachio, peanut, almond, hazelnut and apricot shell). The mechanical properties of the obtained composite material were determined and its effect on the I type snap-fits was analyzed in ANSYS software. When the resulting composite material's mechanical properties were tested, it was found that the density and tensile strength decreased while the Vicat softening point value and melt flow rate increased. In the analysis performed using the ANSYS software, it was found that the composite I type snap-fit design of the same size can resist 12.6% N less force when the material is subjected to its maximum values when it achieves the elongation at break value.

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“…WS is a ubiquitous kind of agricultural by-product and is predominantly used as biofuel, resulting in low utilization and causing environmental pollution. 30 There are few studies on the preparation of WPC using WS, which makes it is meaningful to use WS to prepare composite materials and finally realize the high-value utilization of agricultural wastes from nut shells. 31 In this paper, WS was ultrasonically and hydrothermally treated, and the WS/ATP/polyvinyl chloride (PVC) composites were prepared by the single-screw melt extrusion process.…”

mentioning

confidence: 99%

Enhancement of properties of walnut shell/attapulgite/polyvinyl chloride composites with ultrasonic and hydrothermal treatment

Chen

Zhang

Yang

et al. 2023

Textile Research Journal

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The effects of ultrasonic and hydrothermal treatment on the physical, mechanical, wear resistance, water absorption and thermal stability of the walnut shell (WS)/attapulgite (ATP)/polyvinyl chloride (PVC) composite and its enhancement mechanism were investigated. WS was treated by ultrasound and hydrothermal treatment and mixed with PVC and ATP, and the WS/ATP/PVC composites were prepared by melt extrusion. The properties of composites were characterized, and the results showed that after ultrasonic and hydrothermal treatment, the main chemical structure of composites was not changed significantly. Compared with untreated composites, the wear resistance after ultrasonic treatment for 10 min is the best. After ultrasonic treatment for 15 min, the bending strength, tensile strength and impact strength of the composite are increased by 8.9%, 10.3% and 46.2%, respectively. Hydrothermal treatment at appropriate temperatures also improved some properties of the composites. The composites after hydrothermal treatment at 110°C had the best thermal stability and highest hardness, and the bending strength and tensile strength values were increased by 5.9% and 5.2%, respectively. The impact strength of the composite increased with the increase of hydrothermal treatment temperature. The results showed that ultrasonic and hydrothermal treatments have the potential to improve the performance of wood–plastic composites as environmentally friendly pretreatment methods.

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Pecan nutshell: morphological, chemical and thermal characterization

Cited by 20 publications

References 57 publications

Use of Nutshells Wastes in the Production of Lignocellulolytic Enzymes by White-Rot Fungi

Use of Nutshells Wastes in the Production of Lignocellulolytic Enzymes by White-Rot Fungi

Determination of Mechanical Properties of Fruit Shell Powders Reinforced Wood Plastic Composite (WPC) Materials and Case Study for I-Type Snap-Fit Model

Enhancement of properties of walnut shell/attapulgite/polyvinyl chloride composites with ultrasonic and hydrothermal treatment

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