scholarly journals Review on pretreatment methods and ethanol production from cellulosic water hyacinth

BioResources ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. 2108-2124
Author(s):  
Shahabaldin Rezania ◽  
Mohd Fadhil Md Din ◽  
Shaza Eva Mohamad ◽  
Johan Sohaili ◽  
Shazwin Mat Taib ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Aquatic Plant ◽  
Reducing Sugars ◽  
Lignin Content ◽  
Fermentable Sugars ◽  
Renewable Materials ◽  
Microwave Assisted ◽  
Biomass Resources

Lignocellulosic biomass resources are renewable materials that can be converted to fermentable sugars and subsequently into ethanol. Water hyacinth (Eichhornia crassipes) is a cellulosic aquatic plant that has high carbohydrates, low lignin content, and notable reducing sugars content in its structure. Based on the literature review in the case of water hyacinth, the most frequently used pretreatment methods were acid and alkali, while ionic liquid and microwave-assisted methods were used rarely. The dominant sugars were glucose, xylose, galactose, arabinose, and mannose. Based on the findings, cellulase and S. cerevisiae were mostly used for enzymatic hydrolysis and fermentation of water hyacinth to ethanol, respectively. This review presents the recent studies in pretreatment, hydrolysis, and fermentation of water hyacinth biomass into ethanol.

scholarly journals Release of reducing sugars from water hyacinth by thermochemical and enzymatic hydrolysis

2021 ◽  
Vol 6 (1) ◽  
pp. 156-164
Author(s):  
Jessica E. Guzmán-Pérez ◽  
◽  
Oscar J. Salinas-Luna ◽  
Ernesto Favela-Torres ◽  
Nohemi López-Ramírez ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Enzymatic Hydrolysis ◽  
Acid Concentration ◽  
Water Hyacinth ◽  
Dry Matter ◽  
Eichhornia Crassipes ◽  
Reducing Sugars ◽  
Sulfuric Acid Concentration ◽  
Raw Material ◽  
Thermochemical Pretreatment

Water hyacinth (Eichhornia crassipes) is considered a pernicious herb in many parts of the world due to its rapid growth. However, for its high content of cellulose and hemicellulose, it could be considered as raw material to produce fermentable sugars. In this work, the effect of sulfuric acid concentration by thermochemical pretreatment and enzymatic hydrolysis on the release of sugars from water hyacinth was evaluated. Initially, the effect of the sulfuric acid concentration from 1.5 to 9% at 120 ºC was evaluated. With 1.5%, the release of reducing sugars was 160 milligrams of reducing sugars per gram of dry matter (mg red-sug/g dm). After the thermochemical pretreatment, the enzymatic hydrolysis with the cellulase complex (NS22086) allowed obtaining a reducing sugars concentration up to 317 mg red-sug/g dm. These thermochemical and enzymatic approaches to recover reducing sugars from water hyacinth is promising and should be evaluated for bioprocess using reducing sugars as the main source of carbon, such as bioethanol production.

Eichhornia crassipes (water hyacinth).

2021 ◽  
Author(s):  
Julissa Rojas-Sandoval ◽  
Pedro Acevedo-Rodríguez
Keyword(s):  
Biological Control ◽  
Water Hyacinth ◽  
Management Strategy ◽  
Eichhornia Crassipes ◽  
Aquatic Plant ◽  
Integrated Management ◽  
Rice Paddy ◽  
The World ◽  
Rice Paddy Fields

Abstract E. crassipes, a native of South America, is a major freshwater weed in most of the frost-free regions of the world and is generally regarded as the most troublesome aquatic plant (Holm et al., 1997). It has been widely planted as a water ornamental around the world because of its striking flowers. Wherever it has encountered suitable environmental conditions it has spread with phenomenal rapidity to form vast monotypic stands in lakes, rivers and rice paddy fields. Then it adversely affects human activities (fishing, water transport) and biodiversity. It is impossible to eradicate, and often only an integrated management strategy, inclusive of biological control, can provide a long-term solution to this pest.

Distribution of unusual polyamines in aquatic plants and gramineous seeds

1994 ◽  
Vol 72 (8) ◽  
pp. 1114-1120 ◽  
Author(s):  
Koei Hamana ◽  
Shigeru Matsuzaki ◽  
Masaru Niitsu ◽  
Keijiro Samejima
Keyword(s):  
Key Words ◽  
Aquatic Plants ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Aquatic Plant ◽  
Nelumbo Nucifera ◽  
Water Lily ◽  
Spirodela Polyrhiza ◽  
A Minor ◽  
Seedling Leaf

We tested several plants for the occurrence of unusual polyamines such as homospermidine, aminopropylhomospermidine, norspermidine, norspermine, thermospermine, and caldopentamine. The leaf and root of aquatic plants ubiquitously contained homospermidine in addition to usual polyamines such as putrescine, spermidine, spermine, and cadaverine. Homospermidine was widely distributed in the seed, seedling, leaf, and root of gramineous plants such as rice, millet, oat, rye, wheat, barley, corn, sorghum, and timothy as a minor polyamine. Aminopropylhomospermidine was found in the two aquatic plants, the water lily Nymphaca tetragona and the lotus Nelumbo nucifera as a major polyamine, and in the gramineous seeds as a minor polyamine. Norspermidine, norspermine, homospermine, and caldopentamine were detected in two floating aquatic plants, the duckweed Spirodela polyrhiza and the water hyacinth Eichhornia crassipes. Thermospermine was sporadically detected in some aquatic plants and gramineous seeds. Key words: Gramineae, aquatic plant, polyamine, homospermidine, caldopentamine.

Taxonomic notes on Malaconothridae (Acari, Oribatida) associated with water hyacinth in Egypt 

Zootaxa ◽  
2021 ◽  
Vol 4949 (3) ◽  
pp. 589-590
Author(s):  
SERGEY G. ERMILOV
Keyword(s):  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Aquatic Plant ◽  
Oribatid Mite ◽  
River Nile ◽  
Mite Family

Three Egyptian species of the oribatid mite family Malaconothridae, all found on roots of the floating aquatic plant Eichhornia crassipes in the River Nile, are analyzed. Trimalaconothrus crassipes Ramadan, Ismail & Mustafa, 2017 is recombined to Tyrphonothrus crassipes (Ramadan, Ismail & Mustafa, 2017) (comb. nov.). Malaconothrus ramadani Ramadan, Ismail & Mustafa, 2018 and M. transversus Ramadan, Ismail & Mustafa, 2018 are both considered to be tritonymphs of Ty. crassipes (=M. ramadani syn. nov.; =M. transversus syn. nov.). 

scholarly journals Sifat Fisikokimia Zat Pewarna dari Bunga Eceng Gondok (Eichhornia crassipes) yang Diekstrak dengan Metode Microwave Asissted Extraction (MAE)

2019 ◽  
Vol 8 (1) ◽  
pp. 94-106
Author(s):  
Merynda Indriyani Syafutri ◽  
Filli Pratama ◽  
Gading Putra Yanda
Keyword(s):  
Antioxidant Activity ◽  
Microwave Power ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Extraction Time ◽  
Microwave Assisted Extraction ◽  
Color Intensity ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Anthocyanin Stability

Syafutri et al, 2019. Physicochemical Properties of Colorant from Water Hyacinth Flower (Eichhornia crassipes) Extracted by Microwave Assisted Extraction (MAE) Method. JLSO 8(1):94-106.The objective of this research was to determine the effect of oven microwave power and extraction time on color intensity, anthocyanin stability, and antioxidant activity of colorant from water hyacinth flower (Eichhornia crassipes) extracted by microwave assisted extraction (MAE) method. The research was conducted at Agricultural Product Chemical Laboratory, Agricultural Technology Department, Faculty of Agriculture, Sriwijaya University. The experiment used a Factorial Completely Randomized Design with two factors and each treatment was repeated three times.  The first factor was oven microwave power (100 watts and 300 watts) and the second factor was extraction time in oven microwave (1 minute, 2 minutes, and 3 minutes). The parameters were color intensity, anthocyanin stability, and antioxidant activity. The results showed that the oven microwave power and extraction time had significant effects on color intensity and antioxidant activity. The increasing of oven microwave power and extraction time increased a* value and antioxidant activity, and decreased b* value, significantly. The result also showed that the anthocyanin compounds was not stable with heating up to 105°C.

scholarly journals Effect of various pretreatment methods on sugar and ethanol production from cellulosic water hyacinth

BioResources ◽  
2018 ◽  
Vol 14 (1) ◽  
pp. 592-606
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Ionic Liquid ◽  
Ethanol Production ◽  
Water Hyacinth ◽  
Reducing Sugars ◽  
Ethanol Yield ◽  
Sugar Content ◽  
The Other ◽  
Total Reducing Sugars ◽  
First Time

Effects of acid, alkali, ionic liquid (IL), and microwave-alkali pretreatments on cellulosic water hyacinth (WH) were investigated based on the total reducing sugars (TRS) and ethanol production. For the first time, IL pretreatment with (1-Ethyl-3-methylimidazolium acetate ([EMIM][Ac]) was used for WH, and the efficiency was compared with the other methods. Cellulase and Saccharomyces cerevisiae were fermented together for 72 h. Based on the results, all pretreatment methods effectively increased the sugar content as well as the ethanol yield. Untreated WH had 25 ± 1.5 mg/g of TRS, which was increased to 157 ± 8.2 mg/g, 95 ± 3.1 mg/g, 51 ± 4.2 mg/g, and 45 ± 2.6 mg/g via alkali, microwave-alkali, acid, and IL pretreatments, respectively. The highest TRS level of 402 mg/g was obtained in 24 h and 6.2 ± 0.4 g/L of ethanol in 48 h of fermentation with the alkali-treated WH. The ethanol production was followed by other treatment methods of WH in the order of microwave-alkali, acid, and IL. The results indicated that the ethanol production from WH was related to the type of pretreatment as well as the TRS production.

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