Extraction of α-cellulose from Eleocharis dulcis Holocellulose using NaOH and KOH

Sunardi, Sunardi; Istikowati, Wiwin Tyas; Sari, D.I.

doi:10.1088/1742-6596/1397/1/012031

Cited by 11 publications

(4 citation statements)

References 13 publications

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“…According to Sumiati (Sumiati et al, 2016), higher HCl concentration in the hydrolysis process will remove not only amorphous phase, but also crystalline part of cellulose. This result also similar with the result from previous research (Sunardi et al, 2019). Also, there is an increase in glucose monomer formation, leading to improved dissolution in the washing process.…”

Section: Isolationsupporting

confidence: 92%

Characterization of microcrystalline cellulose from fast-growing species Artocarpus elasticus

Sunardi

Istikowati

Norhidayah

et al. 2021

SJES

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Microcrystalline cellulose is an important derivative of cellulosic material obtained from wood and non-wood sources, and is used for pharmaceutical, food, cosmetics, and other industries. The aim of this study was to determine the effect of various hydrochloric acid concentrations on the characteristics of cellulose microcrystals isolated from terap wood (Artocarpus elasticus). The microcrystalline cellulose was hydrolyzed using hydrochloric acid, at concentrations of 1.5 N, 2.5 N, and 3.5 N for 15 minutes, and within a temperature range of 100-105o C. Thesamples were then analyzed for changes in color and functional groups with Fourier Transform Infrared spectroscopy (FTIR), while crystallinity index was evaluated through X-Ray Diffraction Analysis (X-RDF). The FTIR results showed similarity with commercial products, while X-Ray Diffraction confirms the highest crystallinity index in the 2.5 N of cellulose I (69.395 %) and cellulose II (82.73 %).

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Section: Isolationsupporting

confidence: 92%

Characterization of microcrystalline cellulose from fast-growing species Artocarpus elasticus

Sunardi

Istikowati

Norhidayah

et al. 2021

SJES

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“…This can be justified by the fact that the main components of the curaua fiber (lignin, hemicellulose, and cellulose) present different reactivities in response to alkaline treatments. As a base, KOH acts to solubilize hemicellulose, enabling its extraction [ 25 ]. However, the higher than expected product yield suggests that additional components were also removed.…”

Section: Resultsmentioning

confidence: 99%

Hemicellulose Films from Curaua Fibers (Ananas erectifolius): Extraction and Thermal and Mechanical Characterization

et al. 2022

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With growing environmental concerns over synthetic polymers, natural polymeric materials, such as hemicellulose, are considered a good sustainable alternative. Curaua fibers could be an excellent source of biopolymer as they have a relatively high hemicellulose content (15 wt%) and only a small amount of lignin (7 wt%). In this work, hemicellulose was extracted by an alkaline medium using KOH and the influence of the alkali concentration, temperature, and time was studied. A hemicellulose film was produced by water casting and its mechanical, thermal, and morphological properties were characterized. The results show that the best method, which resulted in the highest hemicellulose yield and lowest contamination from lignin, was using 10% (w/v) KOH concentration, 25 °C, and time of 3 h. The hemicellulose film exhibited better thermal stability and elongation at break than other polymeric films. It also exhibited lower rigidity and higher flexibility than other biodegradable polymers, including polylactic acid (PLA) and polyhydroxybutyrate (PHB).

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“…Holoselulosa menjadi bahan yang mendapatkan perhatian karena merupakan bahan baku yang digunakan untuk menghasilkan pulp dan kertas (Ramawat and Ahuja, 2016), holoselulosa nanofibril (Park et al, 2017), selulosa alfa (Sunardia et al, 2019), biokomposit (Yang et al, 2019), bioetanol (Vaz et al, 2016), aerogel (Huang et al, 2020).…”

Section: Pendahuluanunclassified

Analisis Holoselulosa: Tinjauan Metode Analisis Kimia Konvensional

2020

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Holoselulosa merupakan fraksi karbohidrat yang merupakan gabungan antara selulosa dan hemiselulosa. Fraksi holoselulosa menjadi penting karena merupakan bahan baku yang digunakan menjadi berbagai produk yang memiliki bernilai tinggi. Kandungan holoselulosa bervariasi di antara berbagai spesies kayu. Analisis holoselulosa penting untuk memperoleh informasi mengenai karakteristik dan kualitas bahan baku, mengoptimalkan pemanfaatan sumber bahan baku, dan meningkatkan efisiensi proses sehingga memungkinan komersialisasi proses konversi biomassa menjadi bahan lain yang berekonomis tinggi. Prinsip analisis holoselulosa metode kimia konvensional adalah fraksinasi dan isolasi yaitu dengan menyisihkan lignin, ekstraktif, dan abu, namun menjaga selulosa dan hemiselulosa tetap utuh. Metode analisis holoselulosa biasanya menggunakan metode delignifikasi, menggunakan reagen pengoksidasi kuat pada pH rendah atau tinggi dan suhu tinggi. Metode tersebut meliputi klor dioksida, klor-piridin, klor-etanol amina, klor-1,4-dioksan, klorit asam, dan asam perasetat. Metode natrium klorit banyak digunakan untuk analisis holoselulosa dengan karena prosedur pemisahan sederhana dan delignifikasi cepat. Artikel ini memaparkan sejumlah metode analisis holoselulosa, prinsip penentuan, reaksi, keunggulan dan kelemahan masing-masing metode sehingga dapat memberikan gambaran untuk memilih metode yang sesuai dan akurasi masing-masing metode tersebut.Holocellulose Analysis: A Review of Conventional Chemical Analysis MethodsAbstractHolocellulose is a carbohydrate fraction that is a combination of cellulose and hemicellulose. Holocellulose fraction is important because it is the raw material used to be processed into various high-value products. Holocellulose content varies among various wood species. Holocellulose analysis is important to gain information on the characteristics and quality of raw materials, optimize the utilization of raw material sources, and improve process efficiency so that it is possible to commercialize the process of converting biomass into other high-economical materials. The principle of holocellulose analysis by conventional chemistry method is fractionation and isolation by removing lignin, extractives, and ash, but keeping cellulose and hemicellulose intact. Holocellulose analysis methods usually use the delignification method, using strong oxidizing reagents in low or high pH and high temperatures. Such methods include chlorine dioxide, chlorine-pyridine, chlorine-ethanol amine, chlor-1,4-dioxane, acid chlorite, and peracetic acid. The sodium chlorite method is widely used for the analysis holocellulose because of its simple separation procedure and rapid delignification. This article presents several holocellulose analysis methods, principles of determination, reactions, strengths, and weaknesses of each method to provide an overview for selecting the appropriate method and the accuracy of each method.Keywords: holocellulose analysis, conventional analytical chemistry method, delignification

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Extraction of α-cellulose from Eleocharis dulcis Holocellulose using NaOH and KOH

Cited by 11 publications

References 13 publications

Characterization of microcrystalline cellulose from fast-growing species Artocarpus elasticus

Characterization of microcrystalline cellulose from fast-growing species Artocarpus elasticus

Hemicellulose Films from Curaua Fibers (Ananas erectifolius): Extraction and Thermal and Mechanical Characterization

Analisis Holoselulosa: Tinjauan Metode Analisis Kimia Konvensional

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