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Method for co-production of chemicals by solid-state fermentation in cane sugar manufacture and comprehensive utilization of canes

A solid-state fermentation and chemical technology, applied in biochemical equipment and methods, microbial-based methods, fermentation, etc., can solve the problems of reducing sugarcane energy consumption, energy-consuming bagasse recycling, and difficulties, so as to reduce energy utilization costs , reduce woody components, and solve the effect of poor palatability

Inactive Publication Date: 2013-06-05
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the disadvantages of energy consumption in multi-channel pressing and extracting juice in the utilization process of sugar cane sugar and the subsequent difficulty in resource utilization of bagasse, a method of co-production of ethanol, butanol, lactic acid and other chemicals by solid-state fermentation of sugar cane sugar and comprehensive utilization is proposed, which consumes less energy. Use about 25% of the energy of the traditional sugarcane juice extraction process to extract about 75% of the total sugar cane at one time, and use the solid-state fermentation method to use about 25% of the residual sugar in the raw materials to reduce the energy consumption of sugarcane; the bagasse after solid-state fermentation Carry out classification treatment of long and short fibers, the separated long fibers are used as papermaking raw materials, short fibers and sugarcane pith are used as feed, and the fermented bagasse is graded and utilized to improve the performance of papermaking raw materials and improve the quality of feed products, realizing the high value of sugarcane resources comprehensive utilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1 kg of fresh sugarcane is subjected to one-step juice extraction to obtain 0.75 kg of sugar cane juice and 0.23 kg of sugarcane raw material after juice extraction containing part of the sugar; the sugarcane raw material after single juice extraction is subjected to solid-state fermentation of ethanol: add 0.25 kg of raw material per 100 g of raw material The proportion of g dry yeast, inoculate the activated yeast into the raw material for solid-state fermentation, the fermentation temperature is 32 ° C, the fermentation time is 48 hours, the ethanol obtained by distillation and fermentation; the bagasse after solid-state fermentation is classified into long and short fibers, and classified The final long fibers are used as pulping raw materials, and the short fibers and their sugarcane pith are used as feed materials.

Embodiment 2

[0026] Extract 1 kg of fresh sugarcane to obtain 0.75 kg of sugar cane juice and 0.23 kg of extracted sugarcane raw material containing part of the sugar; perform solid-state fermentation of ethanol on the sugarcane raw material after single juice extraction: add 0.5 kg per 100 g of raw material The ratio of g dry yeast, the activated yeast is inoculated into the raw material for solid-state fermentation, the fermentation temperature is 30°C, the fermentation time is 36 hours, the ethanol obtained by distillation and fermentation has a sugar conversion rate of 88.2%; the sugarcane after solid-state fermentation The slag is classified into long and short fibers, and the classified long fibers are used as raw materials for pulping, and the short fibers and their sugarcane pith are used as feed materials.

Embodiment 3

[0028] 1 kg of fresh sugarcane is subjected to one juice extraction to obtain 0.75 kg of sugarcane juice and 0.23 kg of sugarcane raw material after juice extraction containing part of the sugar; the solid-state fermentation process is to perform solid-state fermentation of butanol on the sugarcane raw material after single juice extraction : Add 15% (m / m) C.acetobutylicum seed solution (the seed solution of C.acetobutylicum is composed of 6% corn mash) after the raw material is sterilized, add 0.2% (m / m) ammonium sulfate, 0.1% (m / m) of yeast extract, 0.15% (m / m) of potassium dihydrogen sulfate and 0.05% (m / m) of dipotassium hydrogen phosphate, after stirring evenly, carry out butanol fermentation, the fermentation temperature is 30-35 ° C, Fermentation time is 48 hours, the butanol that distillation fermentation obtains, the solvent total amount in the fermented liquid that gas chromatography measures is 18.25g / L; Butanol content is 12.44g / L; Acetone content is 4.73g / L; Solid...

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Abstract

The invention provides a method for co-production of ethanol, butanol, lactic acid and the like by solid-state fermentation in cane sugar manufacture and comprehensive utilization of canes, aiming at overcoming the defects of energy consumption due to multi-pass squeezing for sugar juice extraction and difficulty in recycling subsequent bagasse resources in cane sugar manufacture and other utilization processes. In the method, about 75% of total cane sugar amount can be extracted by consuming about 25% of the energy consumed by the traditional cane sugar juice extraction process, and a solid fermentation manner is used to reduce the energy consumption for cane utilization by utilizing about 25% of the residual sugar amount in raw materials; and the bagasse obtained after the solid fermentation is subjected to long / short fiber grading treatment, separated long fibers are used as raw materials for papermaking, and the short fibers, bagasse piths and the like are used as feed. By means of graded utilization of fermented bagasse, the property of the raw materials for papermaking is improved and the quality of feed products is improved, and thus, the high-value comprehensive utilization of the cane resources is realized.

Description

technical field [0001] The invention belongs to the technical field of high-value utilization of biomass resources, and in particular relates to a method for co-production of ethanol through solid-state fermentation of sugar cane sugar production and comprehensive utilization. Background technique [0002] Sugarcane is one of the main economic crops and an important renewable resource in southern my country. Sugar cane sugar is one of the nine key development industries in my country's "Eleventh Five-Year Plan" food industry development. my country is the third largest sugar producer and the second largest sugar consumer in the world, but there is still room for development in my country's per capita sugar consumption. far behind the international average. [0003] The sugar industry has a long history. The traditional sugar cane sugar production process includes: juice extraction, cleaning, evaporation, crystallization, nectar separation and drying. Sugarcane juice extract...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/06C12P7/16C12P7/56C12P7/48C12R1/865C12R1/01C12R1/845C12R1/685
CPCY02E50/17Y02E50/10
Inventor 陈洪章付小果
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI