Studying the Direct and Residual Effect of Long‐Term Fertilization Using Ammonium Lactate and Hot Water Extraction Methods

2005 ◽  
Vol 36 (1-3) ◽  
pp. 203-213 ◽  
Author(s):  
Katalin Berecz ◽  
Julianna Balázs ◽  
István Németh ◽  
György Füleky
Keyword(s):  
Residual Effect ◽  
Extraction Methods ◽  
Hot Water ◽  
Water Extraction ◽  
Hot Water Extraction ◽  
Ammonium Lactate

scholarly journals Effects of non-traditional extraction methods on extracting bioactive compounds from chaga mushroom (Inonotus obliquus) compared with hot water extraction

LWT ◽  
2019 ◽  
Vol 110 ◽  
pp. 80-84 ◽  
Author(s):  
Ah Young Hwang ◽  
Si Chang Yang ◽  
Jaecheol Kim ◽  
Taehwan Lim ◽  
Hyunnho Cho ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Extraction Methods ◽  
Hot Water ◽  
Water Extraction ◽  
Inonotus Obliquus ◽  
Hot Water Extraction

scholarly journals Extraction Methods Affect the Structure of Goji (Lycium barbarum) Polysaccharides

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 936
Author(s):  
Shengyi Zhou ◽  
Atikur Rahman ◽  
Junhui Li ◽  
Chaoyang Wei ◽  
Jianle Chen ◽  
...  
Keyword(s):  
Cell Wall ◽  
Plant Cell Wall ◽  
Extraction Methods ◽  
Hot Water ◽  
Water Extraction ◽  
Substantial Part ◽  
Cell Wall Polysaccharides ◽  
Lycium Barbarum ◽  
Hot Water Extraction ◽  
Rhamnogalacturonan I

Polysaccharides are considered to be the most important active substances in Goji. However, the structure of polysaccharides varies according to the extraction methods applied, and the solution used to prepare Goji polysaccharides (LBPs) were limited. Thus, it is important to clarify the connection between extraction methods and structure of Goji polysaccharide. In view of the complex composition of cell wall polysaccharides and the various forms of interaction, different extraction methods will release different parts of the cell wall. The present study compared the effects of different extraction methods, which have been used to prepare different types of plant cell wall polysaccharides based on various sources, on the structure of cell-wall polysaccharides from Goji, by the single separate use of hot water, hydrochloric acid (0.4%) and sodium hydroxide (0.6%), at both high and low temperatures. Meanwhile, in order to explore the limitations of single extraction, sequential extraction methods were applied. Structural analysis including monosaccharide analysis, GPC-MALLS, AFM and 1H-NMR suggested the persistence of more extensively branched rhamnogalacturonan I (RG-I) domains in the procedures involving low-temperature-alkali, while procedures prepared by high-temperature-acid contains more homogalacturonan (HG) regions and results in the removal of a substantial part of the side chain, specifically the arabinan. A kind of acidic heteropolysaccharide was obtained by hot water extraction. SEC-MALLS and AFM confirmed large-size polymers with branched morphologies in alkali-extracted polysaccharides. Our results provide new insight into the extraction of Goji polysaccharides, which differ from the hot water extraction used by traditional Chinese medicine.

scholarly journals The Effect of Temperature on Pressurised Hot Water Extraction of Pharmacologically Important Metabolites as Analysed by UPLC-qTOF-MS and PCA

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
B. S. Khoza ◽  
L. Chimuka ◽  
E. Mukwevho ◽  
P. A. Steenkamp ◽  
N. E. Madala
Keyword(s):  
Antioxidant Activities ◽  
Pure Water ◽  
Principal Component ◽  
Extraction Process ◽  
Extraction Methods ◽  
Hot Water ◽  
Water Extraction ◽  
Effect Of Temperature ◽  
Extraction Temperature ◽  
Hot Water Extraction

Metabolite extraction methods have been shown to be a critical consideration for pharmacometabolomics studies and, as such, optimization and development of new extraction methods are crucial. In the current study, an organic solvent-free method, namely, pressurised hot water extraction (PHWE), was used to extract pharmacologically important metabolites from driedMoringa oleiferaleaves. Here, the temperature of the extraction solvent (pure water) was altered while keeping other factors constant using a homemade PHWE system. Samples extracted at different temperatures (50, 100, and 150°C) were assayed for antioxidant activities and the effect of the temperature on the extraction process was evaluated. The samples were further analysed by mass spectrometry to elucidate their metabolite compositions. Principal component analysis (PCA) evaluation of the UPLC-MS data showed distinctive differential metabolite patterns. Here, temperature changes during PHWE were shown to affect the levels of metabolites with known pharmacological activities, such as chlorogenic acids and flavonoids. Our overall findings suggest that, if not well optimised, the extraction temperature could compromise the “pharmacological potency” of the extracts. The use of MS in combination with PCA was furthermore shown to be an excellent approach to evaluate the quality and content of pharmacologically important extracts.

scholarly journals Effects of different extraction methods on the properties of pine cone polysaccharides from Pinus koraiensis

BioResources ◽  
2019 ◽  
Vol 14 (4) ◽  
pp. 9945-9956
Author(s):  
Qiang Zhao ◽  
Jie Qin ◽  
Hairong Wang ◽  
Jingyu Wang ◽  
Xueming Zhang
Keyword(s):  
Monosaccharide Composition ◽  
Extraction Process ◽  
Extraction Methods ◽  
Hot Water ◽  
Water Extraction ◽  
Pinus Koraiensis ◽  
Extraction Temperature ◽  
Ultrasound Assisted Extraction ◽  
Hot Water Extraction ◽  
Pine Cone

In order to realize the resource utilization of the Pinus koraiensis pine cone, the polysaccharides were obtained by a traditional hot water extraction process, and the optimal extraction process was confirmed. The effects of a traditional hot water, alkali, and ultrasound assisted extraction on the yield and properties of polysaccharides were studied. The structure, monosaccharide composition, and content of polysaccharides obtained by different extraction methods were analyzed by means of Fourier infrared chromatography and liquid chromatography. Effects of polysaccharides extracted by different methods on the antimicrobial activity of Staphylococcus aureus and Escherichia coli were studied. The scavenging effect of DPPH free radicals were also examined. The optimum condition of the hot water extraction was identified as an extraction temperature of 100 °C, a ratio of material to water at 1:16 (w/v), an extraction time of 4 h, and a yield of polysaccharide at 10.2%. In comparison, the yield of the pine cone polysaccharide was improved significantly to 29.1% by using NaOH solution extraction method. The FTIR spectra of polysaccharides showed that the samples possessed the typical chemical structure of a polysaccharide.

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.

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