scholarly journals Conversion of Food Waste into 2,3-Butanediol via Thermophilic Fermentation: Effects of Carbohydrate Content and Nutrient Supplementation

Foods ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 169
Author(s):  
Dajun Yu ◽  
Joshua O’Hair ◽  
Nicholas Poe ◽  
Qing Jin ◽  
Sophia Pinton ◽  
...  
Keyword(s):  
Food Waste ◽  
Sugar Content ◽  
Cost Effective ◽  
Nutrient Concentrations ◽  
Inexpensive Method ◽  
Nutrient Supplementation ◽  
Environmentally Sustainable ◽  
Fundamental Knowledge ◽  
Theoretical Yield ◽  
Thermophilic Fermentation

Fermentation of food waste into 2,3-butanediol (2,3-BDO), a high-value chemical, is environmentally sustainable and an inexpensive method to recycle waste. Compared to traditional mesophilic fermentation, thermophilic fermentation can inhibit the growth of contaminant bacteria, thereby improving the success of food waste fermentation. However, the effects of sugar and nutrient concentrations in thermophilic food waste fermentations are currently unclear. Here, we investigated the effects of sugar and nutrients (yeast extract (YE) and peptone) concentrations on 2,3-BDO production from fermenting glucose and food waste media using the newly isolated thermophilic Bacillus licheniformis YNP5-TSU. When glucose media was used, fermentation was greatly affected by sugar and nutrient concentrations: excessive glucose (>70 g/L) slowed down the fermentation and low nutrients (2 g/L YE and 1 g/L peptone) caused fermentation failure. However, when food waste media were used with low nutrient addition, the bacteria consumed all 57.8 g/L sugars within 24 h and produced 24.2 g/L 2,3-BDO, equivalent to a fermentation yield of 0.42 g/g. An increase in initial sugar content (72.9 g/L) led to a higher 2,3-BDO titer of 36.7 g/L with a nearly theoretical yield of 0.47 g/g. These findings may provide fundamental knowledge for designing cost-effective food waste fermentation to produce 2,3-BDO.

scholarly journals Sustainability-Oriented Innovations in Food Waste Management Technology

2020 ◽  
Vol 13 (1) ◽  
pp. 210
Author(s):  
Carlos Martin-Rios ◽  
Anastasia Hofmann ◽  
Naomi Mackenzie
Keyword(s):  
Food Waste ◽  
Value Chain ◽  
Cost Effective ◽  
Third Party ◽  
World Population ◽  
Scarce Resources ◽  
Innovation Activities ◽  
Food And Agriculture ◽  
Food And Agriculture Organization

Food is essential to our survival, yet the Food and Agriculture Organization of the United Nations (FAO) estimates that about 820 million people were undernourished in 2018. In this context, food waste generation is a particularly salient issue. Wasting food means missing opportunities to feed the growing world population and consuming scarce resources, such as land, water and energy used in the production, processing, distribution and consumption of food. Firms in HORECA (hospitality, restaurant and catering) represent a considerable share of total food waste and, more importantly, are characterized by an overall low sense of awareness about the sustainability-oriented innovation opportunities and challenges of minimizing food waste. This article draws on an in-depth case study to explore the use of technological advancements in downstream value chain. This case study draws on a tech startup providing services for HORECA companies to address a new way for companies to solve the food waste challenge. Adopting technological innovations to quantify and minimize wastage via collaborations with third-party companies can be a strategic and cost-effective way to supplement a company’s open innovation activities.

scholarly journals Food Losses and Food Waste Versus Circular Economy

2018 ◽  
Vol 18(33) (2) ◽  
pp. 228-237 ◽  
Author(s):  
Maria Parlińska ◽  
Abhishek Pagare
Keyword(s):  
Food Waste ◽  
Circular Economy ◽  
Negative Attitude ◽  
Economic Activities ◽  
Fundamental Knowledge ◽  
Political Contribution ◽  
Food Losses ◽  
Economic Nature ◽  
And Behavior

The article aims to introduce the issue of food waste and all attempts to prevent action. Business and politics are almost interdependent, and any discussion of an economic nature is not complete without a political contribution. The role of politics and politicians in shaping economic activities was and is widely discussed. In the article, there will be a discussion on the problems of food losses and waste in Poland as the member of EU and in India. The idea of the topic came during the tenure of collaboration between representatives of both departments. Conclusions of the study found some similarities and a lot of differences between the countries. Studies have shown that negative attitude of house-hold towards food waste is not frequently reflected in consumers’ behavior, despite their fundamental knowledge on how to reduce food waste. Properly selected and presented information will stimulate both consumer’s attitude and behavior.

scholarly journals Herd Homes: nutrient management and farmer perceptions of performance

2006 ◽  
pp. 309-313
Author(s):  
R.D.Longhurst J. Luo ◽  
M.B. O'Connor ◽  
T. Pow
Keyword(s):  
Nutrient Management ◽  
Cost Effective ◽  
Nutrient Content ◽  
Land Application ◽  
Nutrient Concentrations ◽  
Dairy Farmers ◽  
Beneficial Effects ◽  
Wood Shavings ◽  
Effective Option ◽  
The Media

The recent invention of Herd Homes has presented NZ dairy farmers with a flexible facility for feeding and standing-off stock especially during wet periods. Herd Homes are a combination of feeding platform, stand-off facility and animal shelter comprising a "greenhouse" type roof over slatted concrete floors with an underfloor manure bunker. The prototype Herd Home built in Northland for 230 cows was closely monitored during its initial year (2002/03). Different bunker media were evaluated for their ability to absorb and retain manure nutrients. The media tested were natural materials (soil, wood shavings and a combination of soil/wood shavings) that were all effective at capturing nutrients (N and S) from the bunker manure. Benefits of media amendments are greater nutrient enrichment of the final bunker manure making it more useful for subsequent land application. Use of soil as a bunker medium appears to be the most viable and cost effective option. In early 2006, manure samples were collected from Herd Home bunkers from four geographically diverse areas of NZ and analysed for nutrient content. Nutrient concentrations found reflected variability in cow numbers, usage and feed inputs. In November 2004, 10 existing Herd Home owners were surveyed as to their reasons for purchase. The farmers reported ease of farm management, "on-off" grazing, reduced pugging damage, and improved stock condition and production were some of the beneficial effects of Herd Homes. Keywords: Herd Homes, winter management, wintering system, stand off, feed pad, manure management, bunker manure

scholarly journals Recovery of Food Wastes for a Potential Maggot Production as Animal Feed and Solid Waste Management

2021 ◽  
Author(s):  
Kulyash Meiramkulova ◽  
Gulmira Adilbektegi ◽  
Galym Baituk ◽  
Aigul Kurmanbayeva ◽  
Anuarbek Kakabayev ◽  
...  
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Food Waste ◽  
Solid Waste Management ◽  
Animal Feed ◽  
Cost Effective ◽  
Dry Weight ◽  
Average Weight ◽  
Waste Recovery ◽  
Investigation Process

Waste recovery is an important aspect towards human and environmental health protection. Unfortunately, proper food waste management is among the serious challenges in the field of solid waste management worldwide. Therefore, it is of great importance to conduct studies towards achieving efficient and cost-effective approaches for food waste management. This study investigated the potential of recovering food waste through maggots’ production as animal feed. The influence of fly attractant application on maggot production was also investigated. The study also investigated the potential of maggot production for waste recovery and reduction. Four different types of food waste (starch food leftovers, rotten bananas and peels, rotten pineapple and peels, and rotten oranges) were used in the investigation process. From the results, it was observed that the application of fly attractants had a significant effect on the production of maggots as determined by the weights after harvesting. Average weight of 94 g/kg of maggot was achieved from banana materials with an application of fly attractant during the 8th day of the cultivation; which is equivalent to a 32.4% increase from the same day when the material was cultured without applying fly attractant. Also, from the starch materials, about 77 g/kg of maggot weight was achieved; which is a 54.6% increase from the same day and the same material but without application of fly attractant. Moreover, the relative dry weight reduction in the trials varied from 52.5% to 82.4%.

scholarly journals Biomass Valorization to Produce Porous Carbons: Applications in CO2 Capture and Biogas Upgrading to Biomethane—A Mini-Review

2021 ◽  
Vol 9 ◽  
Author(s):  
Maria Bernardo ◽  
Nuno Lapa ◽  
Isabel Fonseca ◽  
Isabel A. A. C. Esteves
Keyword(s):  
Circular Economy ◽  
Gas Adsorption ◽  
Activated Carbons ◽  
Textural Properties ◽  
Cost Effective ◽  
Attractive Alternative ◽  
Porous Carbons ◽  
Environmentally Sustainable ◽  
Gas Phases ◽  
Metal Organic

Porous carbon materials, derived from biomass wastes and/or as by-products, are considered versatile, economical and environmentally sustainable. Recently, their high adsorption capacity has led to an increased interest in several environmental applications related to separation/purification both in liquid- and gas-phases. Specifically, their use in carbon dioxide (CO2) capture/sequestration has been a hot topic in the framework of gas adsorption applications. Cost effective biomass porous carbons with enhanced textural properties and high CO2 uptakes present themselves as attractive alternative adsorbents with potential to be used in CO2 capture/separation, apart from zeolites, commercial activated carbons and metal-organic frameworks (MOFs). The renewable and sustainable character of the precursor of these bioadsorbents must be highlighted in the context of a circular-economy and emergent renewable energy market to reach the EU climate and energy goals. This mini-review summarizes the current understandings and discussions about the development of porous carbons derived from bio-wastes, focusing their application to capture CO2 and upgrade biogas to biomethane by adsorption-based processes. Biogas is composed by 55–65 v/v% of methane (CH4) mainly in 35–45 v/v% of CO2. The biogas upgraded to bio-CH4 (97%v/v) through an adsorption process yields after proper conditioning to high quality biomethane and replaces natural gas of fossil source. The circular-economy impact of bio-CH4 production is further enhanced by the use of biomass-derived porous carbons employed in the production process.

The soda dipstick: A convenient and cost-effective means of identifying the sugar content of soft drinks

2016 ◽  
Vol 8 (6) ◽  
pp. 877-878
Author(s):  
Jonathan Devaney ◽  
Ryan Smyth ◽  
Stuart Lutton ◽  
Russell McLaughlin ◽  
Jonathan Millar
Keyword(s):  
Sugar Content ◽  
Effective Means ◽  
Cost Effective ◽  
Soft Drinks

Ceramic Composites for Aerospace Applications

2019 ◽  
Vol 23 ◽  
pp. 31-39
Author(s):  
Bhasha ◽  
Sanjeev Gautam ◽  
Parul Malik ◽  
Purnima Jain
Keyword(s):  
Cost Effective ◽  
Ceramic Composites ◽  
Jet Engines ◽  
Promising Candidate ◽  
Environmentally Sustainable ◽  
Aerospace Applications ◽  
Harmful Emissions ◽  
Temperature Application ◽  
Shock Resistance ◽  
Commercial Aircrafts

Ceramic composites is playing crucial role to accomplish highly efficiently and cost effective equipment for aerospace industry. The instigation of ceramics into aircraft industry is a promising step towards virtuous future. Ceramics has a key role in innovation of highly competent material for space travel which is highly economical and environmentally sustainable. Advancement in making fuel efficient engines are necessity in present scenario due to the harmful emissions releases in the environment by burning of fuel to power up engine. The high temperature application of composites makes it very attractive for aerospace applications. This light weight material has potential to thrust spacecraft upto ten times quicker with the identical fuel consumption, therefore significantly depreciating size of vehicle and increasing travel distance. The implementation of ceramics into jet engines and turbines increase the efficiency of engine due to its lighter weight and better thermal capabilities. A jet engine employing ceramic composites has manifest 15% more fuel saving when compared to the simple nickel based alloys. Hence, ceramic composites can replace nickel based alloys which has been a promising candidate for the engines of commercial aircrafts. Some disadvantages has been also discussed that is brittle failure and limited thermal and shock resistance.

Valorization of food waste for cost-effective reducing sugar recovery in a two-stage enzymatic hydrolysis platform

Energy ◽  
2020 ◽  
Vol 208 ◽  
pp. 118379
Author(s):  
Cunsheng Zhang ◽  
Xinxin Kang ◽  
Fenghuan Wang ◽  
Yufei Tian ◽  
Tao Liu ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Food Waste ◽  
Cost Effective ◽  
Reducing Sugar ◽  
Sugar Recovery ◽  
Two Stage

Comparison of Bacterial and Yeast Ethanol Fermentation Yield from Rice Straw

2011 ◽  
Vol 347-353 ◽  
pp. 2541-2544
Author(s):  
Benjarat Laobussararak ◽  
Warawut Chulalaksananukul ◽  
Orathai Chavalparit
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Enzymatic Hydrolysis ◽  
Rice Straw ◽  
Zymomonas Mobilis ◽  
Ethanol Yield ◽  
Sugar Content ◽  
Alkali Pretreatment ◽  
Yeast Saccharomyces Cerevisiae ◽  
Pretreatment Condition ◽  
Theoretical Yield

This study was to investigate the fermentation of rice straw using various microorganisms, i.e., the bacterium Zymomonas mobilis, a distillery yeast Saccharomyces cerevisiae and a co-culture of Zymomonas mobilis and Saccharomyces cerevisiae. Rice straw was pretreated with alkaline and followed by enzymatic hydrolysis using cellulase before fermentation by the bacterium and a distillery yeast. Results show that alkali pretreatment is appropriate for rice straw since this pretreatment condition can produce the maximum cellulose of 88.96% and reducing sugar content of 9.18 g/l. Furthermore, the ethanol yield after enzymatic hydrolysis (expressed as % theoretical yield) was 15.94-19.73% for the bacterium, 20.48-35.70% for yeast and 21.56-29.89% for co-culture. Therefore, the distillery yeast was a suitable microorganism for ethanol production from rice straw.

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