Effects of anaerobic/aerobic incubation and storage temperature on preservation and deodorization of kitchen garbage

Wang, Qunhui; Narita, Junya; Xie, Weimin; Ohsumi, Yukihide; Kusano, Kohji; Shirai, Yoshihito; Ogawa, Hiroaki

doi:10.1016/s0960-8524(02)00062-7

Cited by 56 publications

(31 citation statements)

References 13 publications

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“…With an aim to develop a completely new recycling system for FW, Wang et al [4] conducted a study on the preservation, deodorization, and suppression of the growth of putrefactive and food-poisoning bacteria by spontaneous fermentation. Moreover, there have been various biological processes employing FW as a substrate for the production of methane [5], hydrogen [6], lactic acid [7], and succinic acid [8] and biorefinery technologies to develop the purification of lactic and succinic acids [7,9] from FW fermentation broth.…”

Section: Introductionmentioning

confidence: 99%

Enzymatic hydrolysis of food waste and ethanol fermentation

Moon¹,

Song²,

Kim³

et al. 2009

Int. J. Energy Res.

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130

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SUMMARYAlthough food waste (FW) can serve as a valuable substrate containing large amounts of organic materials such as soluble sugar, starch, and cellulose, it is recognized as an environmental pollutant, and the hydrolysis of solids in FW still serves as a rate-limiting step in its biological processes. To evaluate a new potential application of FW as an alternative substrate for ethanol production through laboratory experiments, we investigated FW hydrolysis by using individual commercial enzymes and their mixtures; batch ethanol fermentation by Saccharomyces cerevisiae; and the effect of salt, which is inherently included in FW, on ethanol fermentation. A comparison of the glucose yields of the FW broth pretreated with amyloglucosidase, carbohydrase, and a mixture of both enzymes revealed that a higher glucose yield was obtained when the enzyme mixture was used (0.46 g g À1 of dry FW) than when amyloglucosidase (0.41) or carbohydrases (0.35) were used at 3 h from the initiation of the reaction. A high ethanol yield (0.23 g g À1 of dry FW) was obtained after 15 h of fermentation by S. cerevisiae by using the FW broth hydrolyzed by the enzyme mixture and was estimated to be nearly equivalent to the ethanol yields of lignocellulose biomasses. With regard to the effect of salt on ethanol fermentation, no alteration in the fermentation parameters was observed up to a salt content of 3% w/v. At a salt content of over 4%, however, substrate uptake and cell growth dramatically decreased, and a slight reduction in ethanol yield was observed. FW utilization for ethanol production by enzymatic hydrolysis and ethanol fermentation by S. cerevisiae suggests a promising practical approach to prevent environmental pollution and obtain a product of high value, ethanol.

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Section: Introductionmentioning

confidence: 99%

Enzymatic hydrolysis of food waste and ethanol fermentation

Moon¹,

Song²,

Kim³

et al. 2009

Int. J. Energy Res.

Self Cite

130

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show abstract

“…Currently, many studies on probiotics to improve further human health have been reported [30] as the inhibition of pathogen attachment [31] and cholesterol reduction by lactic acid bacteria [32]; hence, lactic acid bacteria will be one of the beneficial bacteria in many industrial fields. Lactic acid is produced from various biomass such as garbage [33,34], potato starch [35], and lignocellulosic biomass [36,37], as well as the molecule is manufactured either by chemical synthesis or by microbial fermentation; however, there are no reports on the production of lactic acid from excess sludge to the present date. In this paper, our goal was to examine the reduction of excess sludge through lactic acid fermentation using endogenous bacteria in excess sludge.…”

Section: Introductionmentioning

confidence: 99%

Enhanced production of lactic acid with reducing excess sludge by lactate fermentation

Maeda

Yoshimura

Shimazu

et al. 2009

Journal of Hazardous Materials

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“…Normally biotransformation is utilized for conversion of a wide variety of organic waste materials to useful end products [4][5][6][7][8]. The optimum thermophilic temperature for either aerobic or anaerobic activities was found to be at 50-60 • C [9].…”

Section: Tests Of Disposal Processmentioning

confidence: 99%