DOI: https://doi.org/10.36873/a , Mahdi Santoso, Yanciluk

2020 ◽  
Vol 13 (02) ◽  
pp. 31-43
Author(s):  
Agrienvi
Keyword(s):  
Citric Acid ◽  
Hot Water ◽  
Water Extraction ◽  
Raw Material ◽  
Hexane Extraction ◽  
Hot Water Extraction ◽  
Composite Board ◽  
Nypa Fruticans ◽  
Inorganic Substances ◽  
Extractive Substances

ABSTRACTNipa (Nypa fruticans Wurmb) is a non wood lignosellulosic materials that potential as raw material of compositeboard. One of disadvantage of the nipa fronds was contains are very high extractives and inorganic substances. Thepresence of high content of extractives in raw material of particle board potentially be an obstacle in the process ofgluing the composite board. The existing of extractive substances on the surface of the composite board raw materialscontribute to make the bonding process is not going well. On the other side, the utilization of natural binder for nonwood composite is still limited. This research focused to investigated the effects of extractive subtances for bondingperformance of natural binder such as citric acid for nipa fronds particleboard. The particles screened passed throughaperture sizes of 10 mesh and treated with three condition (non extraction, hot water extraction and n -hexanaextraction) were used as materials in this research. Addition of natural binder of 10% based on air dried particles wasdone and pressing temperature was set at 180ºC under a pressure of 3,6 MPa during 10 minutes. The physics andmechanics properties of particleboard was tested by standard JIS A 5908:2003. The results showed that theextractiction treatments for raw material affects on the properties of the particleboards. Hot water extraction treatmentwas able to give the best results. The properties of particleboard was density 0.84 g.cm-3; moisture content 7.44%;thickness swelling 1,12%; water absorption 21,83%; surface roughness 7.57 ?m; internal bonding 0.49 MPa; modulusof rupture 10.42 MPa and modulus of elasticity 3.65 GPa. All of the properties of nipa fronds particleboard meet mostof the standards JIS A 5908:2003.Keywords: Hot water extraction, n-hexane extraction, nipa frond particleboard, natural binder, citric acid.

Mahdi Santoso, Yanciluk

2020 ◽  
Vol 13 (02) ◽  
Author(s):  
Agrienvi
Keyword(s):  
Citric Acid ◽  
Raw Materials ◽  
Hot Water ◽  
Raw Material ◽  
Modulus Of Rupture ◽  
Hexane Extraction ◽  
Nypa Fruticans ◽  
Bonding Performance ◽  
Extractive Substances ◽  
Extraction Treatment

ABSTRACTNipa (Nypa fruticans Wurmb) is a non wood lignosellulosic materials that potential as raw material ofcomposite board. One of disadvantage of the nipa fronds was contains are very high extractives and inorganicsubstances. The presence of high content of extractives in raw material of particle board potentially be an obstacle inthe process of gluing the composite board. The existing of extractive substances on the surface of the compositeboard raw materials contribute to make the bonding process is not going well. On the other side, the utilization ofnatural binder for non wood composite is still limited. This research focused to investigated the effects of extractivesubtances for bonding performance of natural binder such as citric acid for nipa fronds particleboard. The particlesscreened passed through aperture sizes of 10 mesh and treated with three condition (non extraction, hot waterextraction and n-hexana extraction) were used as materials in this research. Addition of natural binder of 10% basedon air dried particles was done and pressing temperature was set at 180ºC under a pressure of 3,6 MPa during 10minutes. The physics and mechanics properties of particleboard was tested by standard JIS A 5908:2003. Theresults showed that the extractiction treatments for raw material affects on the properties of the particleboards. Hotwater extraction treatment was able to give the best results. The properties of particleboard was density 0.84 g.cm-3;moisture content 7.44%; thickness swelling 1,12%; water absorption 21,83%; surface roughness 7.57 μm; internalbonding 0.49 MPa; modulus of rupture 10.42 MPa and modulus of elasticity 3.65 GPa. All of the properties of nipafronds particleboard meet most of the standards JIS A 5908:2003.Keywords: Hot water extraction, n-hexane extraction, nipa frond particleboard, natural binder, citric acid.

Steam drying markedly increases the solubility of feruloylated arabinan-rich pectic polysaccharide in sugar beet pulp

2021 ◽  
pp. 582-590
Author(s):  
TatsuyaTatsuya Abe ◽  
Taizo Nagura ◽  
Hirokatsu Uchino
Keyword(s):  
Sugar Beet ◽  
Hot Water ◽  
Sugar Beet Pulp ◽  
Water Extraction ◽  
Raw Material ◽  
Pectic Polysaccharides ◽  
Pectic Polysaccharide ◽  
Hot Water Extraction ◽  
Beet Pulp ◽  
Steam Drying

Three sugar beet pulp samples, which were dried by different methods (drum-dried, steam-dried, and shelf-dried), were prepared and hot water extractions (90 °C, 6 h) were performed to compare the pectic polysaccharide yield. The steam-dried pulp yielded 34.1 g of pectic polysaccharides per 100 g of dry matter. This represented about twice the yield of the other techniques, with a recovery of about 60% of the estimated amount contained in the raw material. The pectic polysaccharide obtained from the steam-dried pulp by hot water extraction and dialysis contained larger amount of arabinose (32.4 g/ 100 g solids) as constituent sugars than that of commercial beet pectin. The weight-average molecular mass was 175 kDa, which was lower than that of commercial beet pectin (538 kDa) and most of the extracted feruloyl group were bound to this polysaccharide. These characteristics were similar to those of pectic polysaccharides obtained previously by autoclave extraction from wet beet pulp. It was presumed that the pectic polysaccharides contained in sugar beet pulp were partially hydrolyzed and solubilized under pressurized and high temperature conditions (0.25–0.3 MPa, 150–180 °C) during steam drying, making them easier to extract. Using steam-dried pulp as a raw material, feruloylated arabinan-rich pectic polysaccharides can be efficiently obtained by hot water extraction under non-pressurized conditions without acid addition.

scholarly journals Structural Characterization of a Polysaccharide from Gastrodia elata and Its Bioactivity on Gut Microbiota

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4443
Author(s):  
Jiangyan Huo ◽  
Min Lei ◽  
Feifei Li ◽  
Jinjun Hou ◽  
Zijia Zhang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Citric Acid ◽  
Gut Microbiota ◽  
Structural Characterization ◽  
Hot Water ◽  
Nmr Analysis ◽  
Gastrodia Elata ◽  
Hot Water Extraction ◽  
Hydroxybenzyl Alcohol

A novel homogeneous polysaccharide named GEP-1 was isolated and purified from Gastrodia elata (G. elata) by hot-water extraction, ethanol precipitation, and membrane separator. GEP-1, which has a molecular weight of 20.1 kDa, contains a polysaccharide framework comprised of only glucose. Methylation and NMR analysis showed that GEP-1 contained 1,3,6-linked-α-Glcp, 1,4-linked-α-Glcp, 1,4-linked-β-Glcp and 1,4,6-linked-α-Glcp. Interestingly, GEP-1 contained citric acid and repeating p-hydroxybenzyl alcohol as one branch. Furthermore, a bioactivity test showed that GEP-1 could significantly promote the growth of Akkermansia muciniphila (A. muciniphila) and Lacticaseibacillus paracasei (L.paracasei) strains. These results implied that GEP-1 might be useful for human by modulating gut microbiota.

Effect of Ultrasonic Wave on Lentinan Extraction

2011 ◽  
Vol 291-294 ◽  
pp. 1339-1343
Author(s):  
Wen Bo Zhang ◽  
Hong Rui Li ◽  
Jun Tao ◽  
Bing Bing Dong
Keyword(s):  
Extraction Efficiency ◽  
Hot Water ◽  
Water Extraction ◽  
Extraction Technique ◽  
Orthogonal Experimental Design ◽  
Extraction Temperature ◽  
Lentinus Edodes ◽  
Extraction Condition ◽  
Hot Water Extraction ◽  
Extraction Parameters

The research in this paper optimized the extraction technique of lentinan with ultrasonic assistant method on the basis of hot water extraction technique, and investigated the promoting function of ultrasound to polysaccharides extraction. Extraction condition was selected by means of orthogonal experimental design, four factors and three levels L9(34), after key elements were respectively chosen through single factor experiments. Comparison between optimal extraction parameters of two method, hot water extraction technique and ultrasonic assistant extraction technique, showed decreased extraction temperature and significantly shortened extraction time, which existed in the second means, improved the extraction efficiency. Lentinus edodes polysaccharide extracted with ultrasonic assistant technique, the extraction rate and polysaccharide content percentage increased 6.22% and 8.66% respectively, comparative to which extracted with hot water extraction technique.

scholarly journals Optimization of the extraction of galactoglucomannans from Pinus halepensis

Holzforschung ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Nacera Benouadah ◽  
Andrey Pranovich ◽  
Djamel Aliouche ◽  
Jalel Labidi ◽  
Stefan Willför
Keyword(s):  
High Performance ◽  
Pinus Halepensis ◽  
Hot Water ◽  
Water Extraction ◽  
Chemical Degradation ◽  
Extraction Time ◽  
Size Exclusion ◽  
Hot Water Extraction ◽  
Extraction Processes ◽  
Extraction Parameters

AbstractThe effectiveness of pressurized hot-water extraction conditions for obtaining galactoglucomannans (GGMs) from Pinus halepensis suitable for applications like coatings and films packaging was investigated. For this purpose, high molar masses with high yields are required, presenting a serious challenge for hot-water extraction processes. The extraction of GGMs was carried out in an accelerated solvent extractor (ASE) and the isolation was performed by precipitation in ethanol. Three temperatures in the range 160–180 °C and five extraction times 5–90 min were tested in order to optimize extraction parameters of GGMs, avoiding thermal and chemical degradation in hot-water. Total dissolved solids (TDS) were determined gravimetrically after freeze-drying and weight average molar masses (Mw) were determined by high-performance size exclusion chromatography (HPSEC). Total non-cellulosic carbohydrates were determined by gas chromatography (GC) after acid methanolysis. Free monomers were additionally analyzed by GC. Lignin in water extracts was measured by an ultraviolet (UV) method. Acetic acid was determined after alkaline hydrolysis of acetyl groups and analyzed by HPSEC. The main parameters influencing the extraction processes of the GGMs, namely, extraction time and temperature were studied. Optimal extraction parameters of GGMs were identified at 170 °C and 20 min extraction time, with average Mw of extracted fraction of 7 kDa leading to a GGM yield of approximately 56 ${\text{mgg}}_{\text{o}.\text{d}.\text{m}}^{-1}$, corresponding to 6% on dry wood basis.

Extraction of carboxylic acid-containing diterpenoids from Dodonaea viscosa via pressurised hot water extraction

Fitoterapia ◽  
2018 ◽  
Vol 126 ◽  
pp. 65-68 ◽  
Author(s):  
Bianca J. Deans ◽  
Wesley J. Olivier ◽  
David Girbino ◽  
Alex C. Bissember ◽  
Jason A. Smith
Keyword(s):  
Carboxylic Acid ◽  
Hot Water ◽  
Water Extraction ◽  
Dodonaea Viscosa ◽  
Hot Water Extraction
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