Method for production of ethanol or lactic acid

A technology of ethanol and lactic acid, which is applied in the direction of manufacturing tools, biofuels, wood processing appliances, etc., and can solve the problems of undisclosed preparation of ethanol and lactic acid

Inactive Publication Date: 2009-11-25
INDEPENDENT ADMINISTRATIVE INST JAPAN INT RES CENT FOR AGRI SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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However, Patent Document 3 does not disclose a method fo

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  • Method for production of ethanol or lactic acid
  • Method for production of ethanol or lactic acid
  • Method for production of ethanol or lactic acid

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[0043] Both the ethanol preparation method and the lactic acid preparation method of the present invention use palm trunks or felled palm trunks as raw materials, and ferment the raw materials with microorganisms to prepare ethanol or lactic acid.

[0044]Palm trunks can be palm trunks with reduced fruit yields such as oil palm, sago palm, coconut or water palm, or palm trunks that have passed through more than 20 years. Palm tree trunks harvested for cultivation and planned cultivation, or young palm trunks that have to be harvested due to diseases and insect pests, as long as they are palm trunks that can collect sap.

[0045] As a method of collecting sap from a palm trunk, physical pressing, pulverization, drying and centrifugation, heating with water vapor, addition of water, extraction with an organic solvent can be used. In addition, pre-treatment with chemicals allows for easy collection of sap. It is especially preferred that the harvested palm trunk is crushed follo...

Embodiment 1

[0075] The present invention is further described in detail below through examples. In addition, the examples do not limit the scope of the present invention.

[0076] Cut the oil palm trunk with a diameter of 32 to 33 cm after harvesting into a disc shape with a thickness of 6.8 to 7.0 cm, and cut it into three equal parts from the center to the bark 14 at an interval of about 5 cm into a central area 11, a middle area 12 and an outer area 13. Except for the outermost bark 14, the outer region 13, the middle region 12, and the center region 11 were coarsely pulverized, and then pulverized with a rotary pulverizer to obtain pulverized oil palm trunks. Crushed oil palm trunks from each area were press-filtered using a glass filter to collect sap. The amount of sap collected by filtration from the part of the central area 11 is about 140cm 3 , the amount of sap collected from the part of the middle area 12 is about 80cm 3 , the amount of sap collected from the part of the ou...

Embodiment 2

[0101] Using a raw material in which sap extracted from the central region 11 of the felled oil palm trunk 10 is mixed with an enzymatic hydrolyzate of fiber, ethanol fermentation with microorganisms is performed. Among them, the enzymatic decomposition product of fiber was dried and concentrated overnight at 50° C., dissolved in the previously obtained sap containing a nitrogen source, sterilized by filter filtration, and then subjected to an ethanol fermentation test. Other conditions are identical with embodiment 1.

[0102] The results of Examples 1 and 2 and Comparative Example 1 will be described.

[0103] figure 2 Shown are graphs of residual glucose and ethanol production versus fermentation time for Examples 1 and 2 and Comparative Example 1. In the figure, the horizontal axis is the fermentation time (hour), and the left vertical axis is the residual amount of glucose (g / 10 3 cm 3 ), the right vertical axis is ethanol production (g / 10 3 cm 3 ). In the figure,...

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Abstract

Disclosed is a method for producing ethanol or lactic acid from a palm trunk with efficiency and at low cost. A sap is extracted from a palm trunk. A fiber of the palm trunk produced after the extraction of the sap is hydrolyzed with an enzyme to saccharify the fiber, thereby producing a saccharified solution. The sap and the saccharified solution are subjected to the fermentation with a microorganism to produce ethanol or lactic acid. As a pretreatment for the saccharification with the enzyme, the fiber of the palm trunk may be hydrolyzed with an acid or alkali. The saccharification by hydrolysis and the fermentation with the microorganism may be carried out simultaneously. In the fermentation with the microorganisms, the saccharified solution (i.e., a hydrolysate of the palm trunk) and the sap may be used in the form of a mixture or separately.

Description

technical field [0001] The present invention relates to a method for producing ethanol or lactic acid, and more particularly relates to a method capable of producing ethanol or lactic acid at a high yield and at low cost from palm tree trunks. Background technique [0002] To prepare sugars, starches and oils from the sap of the palm plant to efficiently utilize its sap or seeds. For example, the palm oil produced by oil palms in the world is about 35.5 million tons / year, about 87% of which is equally accounted for by Malaysia and Indonesia, and is a representative agricultural product in Southeast Asia (according to the actual results in 2005, US statistical data). Palm oil is relatively cheap compared to soybean oil, so it is widely used for industrial purposes such as soaps and cosmetics in addition to edible products such as margarine and fried food oil. [0003] Oil palm (oil palm, scientific name: Elaeis guineensis, Japanese name: Abrayashi) cultivated for the produc...

Claims

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Application Information

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IPC IPC(8): C12P7/06C12P19/02C12P19/04C12P19/14C12P7/56B27L11/08A01G23/10
CPCC12P7/10Y02E50/17Y02E50/16C12P7/56Y02E50/10
Inventor 小杉昭彦森隆村田善则田中良平真柄谦吾
Owner INDEPENDENT ADMINISTRATIVE INST JAPAN INT RES CENT FOR AGRI SCI
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