Re: [biofuel] No more French fry WVO?
I received some ordinary post mail from Mr. Hendrik Stein G. Knothe concerning various emission tests by Prof. Krahl in Germany. They reported traceo of acrolein and aldehides in emissions. The issue of acrolein was somewhat treated (in part by me) some weeks ago. Best wishes, Christian - Original Message - From: Appal Energy [EMAIL PROTECTED] To: biofuel@yahoogroups.com Sent: Saturday, June 29, 2002 4:21 PM Subject: Re: [biofuel] No more French fry WVO? http://enn.com/news/wire-stories/2002/06/06252002/ap_47645.asp - 6/25/2002 WHO hosts urgent meeting on acrylamide in food Permit me to carry the thought process a wee tad further for us common laypersons. Anyone ever given much thought to the decay product of glycerin under conditions of inadequate combustion? Oddly enough it's call acrolein - rather toxic to living things, especially breathing things, at least according to every MSDS sheet I've read. So take that decay consideration, slap a bunch of potato shreds in a high temp tri-glyceride bath, or bake a grain product with a high oil content, and what might you think you'll get? Perhaps acrilomide? Glycerin, in the form of triglycerides, exposed to semi-high temps of frying and baking...~350* Fahrenheit. But then there is this statement: The Swedish researchers said that fried, oven-baked, and deep-fried potato and cereal products may contain high levels of acrylamide. The same results were not found in boiled products. A bit odd that water boils at 212* Fahrenheit, ~140* lower and a considerably less destructive temp range than baking or frying. Makes one wonder if there won't be a rush in the appliance and food processing markets for products that can cook foods in the temperature range of boiling, rather than frying and baking. Also makes one wonder if there won't be a rush for oils that are 100% FFAs, rather than a blend of tri-glycerides and FFAs. That would sure throw a kink in biodiesel manufacture when using waste restaurant oils. It would force every shadetree biodieseler to move towards high pressure esterification, rather than STP transesterification. It would also put some pressure on the animal feed and rendering industries to move away from using reprocessed WVOs as protein/energy additives to feed. Would be a shame to kill the AKC registered family pet simply by feeding it Puppy Chow. Todd Swearingen Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send quot;unsubscribequot; messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ __ mensaje enviado desde http://www.iespana.es emails (pop)-paginas web (espacio ilimitado)-agenda-favoritos (bookmarks)-foros -Chat Yahoo! Groups Sponsor -~-- Free $5 Love Reading Risk Free! http://us.click.yahoo.com/3PCXaC/PfREAA/Ey.GAA/FGYolB/TM -~- Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send quot;unsubscribequot; messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [biofuel] No more French fry WVO?
OCT 2000 Document type: Article Language: English Cited References: 61 Times Cited: 0 Abstract: Diesel engine exhaust particles (DEP) contribute substantially to ambient air pollution. They cause acute and chronic adverse health effects in humans. Biodiesel (rapeseed oil methyl ester, RME) is used as a green fuel in several countries. For a preliminary assessment of environmental and health effects of RME, the particulate-associated emissions from the DEP of RME and common fossil diesel fuel (DF) and their in vitro cytotoxic and mutagenic effects were compared. A test tractor was fuelled with RME and DF and driven in a European standard test cycle (ECE R49) on an engine dynamometer. Particle numbers and size distributions of the exhausts were determined at the load modes idling and rated power. Filter-sampled particles were extracted and their cytotoxic properties tested using the neutral red assay, Mutagenicity was tested using the Salmonella typhimurium/microsome assay. Despite higher total particle emissions, solid particulate matter (soot) in the emissions from RME was lower than in the emissions from DF. While the size distributions and the numbers of emitted particles at rated power were nearly identical for the two fuels, at idling DF emitted substantially higher numbers of smaller particles than RME. The RME extracts caused fourfold stronger toxic effects on mouse fibroblasts at idling' but not at rated power than DF extracts. The extracts at both load modes were significantly mutagenic in TA98 and TA100. However, extracts of DF showed a fourfold higher mutagenic effect in TA98 land twofold in TA100) than extracts of RME. These results indicate benefits as well as disadvantages for humans and the environment from the use of RME as a fuel for tractors. The lower mutagenic potency of DEP from RME compared to DEP from DF is probably due to lower emissions of polycyclic aromatic compounds. The higher toxicity is probably caused by carbonyl compounds and unburned fuel, and reduces the benefits of the lower emissions of solid particulate matter and mutagens from RME. Author Keywords: biodiesel, rapeseed oil, diesel engine emissions, particulate matter, ultrafine particles, polycyclic aromatic hydrocarbons, mutagenicity, cytotoxicity KeyWords Plus: PARTICULATE AIR-POLLUTION, MULTIVARIATE STATISTICAL-ANALYSIS, CARBON-BLACK, LUNG-CANCER, TOXICOLOGICAL PERSPECTIVE, EXHAUST PARTICULATE, CHRONIC INHALATION, TITANIUM-DIOXIDE, DNA-ADDUCTS, TEST SYSTEM Addresses: Bunger J, Univ Gottingen, Inst Arbeits Sozialmed, Waldweg 37, D-37073 Gottingen, Germany. Univ Gottingen, Inst Arbeits Sozialmed, D-37073 Gottingen, Germany. Bundesforsch Anstalt Landwirtschaft, Inst TEchnol Biosyst Tech, D-38116 Braunschweig, Germany. Publisher: SPRINGER-VERLAG, NEW YORK IDS Number: 370PF ISSN: 0340-5761 SEARCH LIBRIS for the current journal and if available order the article via LIBRIS ILL Request. Article 1 of 89 Copyright © 2001 Institute for Scientific Information - Original Message - From: Appal Energy [EMAIL PROTECTED] To: biofuel@yahoogroups.com Sent: Saturday, June 29, 2002 4:21 PM Subject: Re: [biofuel] No more French fry WVO? http://enn.com/news/wire-stories/2002/06/06252002/ap_47645.asp - 6/25/2002 WHO hosts urgent meeting on acrylamide in food Permit me to carry the thought process a wee tad further for us common laypersons. Anyone ever given much thought to the decay product of glycerin under conditions of inadequate combustion? Oddly enough it's call acrolein - rather toxic to living things, especially breathing things, at least according to every MSDS sheet I've read. So take that decay consideration, slap a bunch of potato shreds in a high temp tri-glyceride bath, or bake a grain product with a high oil content, and what might you think you'll get? Perhaps acrilomide? Glycerin, in the form of triglycerides, exposed to semi-high temps of frying and baking...~350* Fahrenheit. But then there is this statement: The Swedish researchers said that fried, oven-baked, and deep-fried potato and cereal products may contain high levels of acrylamide. The same results were not found in boiled products. A bit odd that water boils at 212* Fahrenheit, ~140* lower and a considerably less destructive temp range than baking or frying. Makes one wonder if there won't be a rush in the appliance and food processing markets for products that can cook foods in the temperature range of boiling, rather than frying and baking. Also makes one wonder if there won't be a rush for oils that are 100% FFAs, rather than a blend of tri-glycerides and FFAs. That would sure throw a kink in biodiesel manufacture when using waste restaurant oils. It would force every shadetree biodieseler to move towards high pressure esterification, rather than STP transesterification. It would also put
[biofuels-biz] Re: [biofuel] No more French fry WVO?
I can't see this as having any impact on peoples love for deep fry. Steve Spence Subscribe to the Renewable Energy Newsletter: http://www.webconx.com/subscribe.htm Renewable Energy Pages - http://www.webconx.dns2go.com/ Human powered devices, equipment, and transport - http://www.webconx.dns2go.com/2000/humanpower.htm [EMAIL PROTECTED] - Original Message - From: Keith Addison [EMAIL PROTECTED] To: biofuel@yahoogroups.com Cc: biofuels-biz@yahoogroups.com Sent: Saturday, June 29, 2002 1:20 PM Subject: [biofuel] No more French fry WVO? http://www.planetark.org/dailynewsstory.cfm/newsid/16556/story.htm Experts to examine safety of crisps, French fries SWITZERLAND: June 25, 2002 GENEVA - World Health Organisation (WHO) food safety experts start three days of meetings yesterday to probe reports that potato crisps, French fries and other carbohydrate-rich foods contain a cancer-causing substance. http://enn.com/news/wire-stories/2002/06/06252002/ap_47645.asp - 6/25/2002 WHO hosts urgent meeting on acrylamide in food http://enn.com/news/wire-stories/2002/06/06282002/ap_47695.asp - 6/28/2002 Scientists cite real concern about acrylamide in food Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send quot;unsubscribequot; messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Yahoo! Groups Sponsor -~-- Free $5 Love Reading Risk Free! http://us.click.yahoo.com/3PCXaC/PfREAA/Ey.GAA/9bTolB/TM -~- Biofuels at Journey to Forever http://journeytoforever.org/biofuel.html Biofuel at WebConX http://www.webconx.com/2000/biofuel/biofuel.htm List messages are archived at the Info-Archive at NNYTech: http://archive.nnytech.net/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [biofuel] No more French fry WVO?
I can't see this as having any impact on peoples love for deep fry. Steve Spence Subscribe to the Renewable Energy Newsletter: http://www.webconx.com/subscribe.htm Renewable Energy Pages - http://www.webconx.dns2go.com/ Human powered devices, equipment, and transport - http://www.webconx.dns2go.com/2000/humanpower.htm [EMAIL PROTECTED] - Original Message - From: Keith Addison [EMAIL PROTECTED] To: biofuel@yahoogroups.com Cc: biofuels-biz@yahoogroups.com Sent: Saturday, June 29, 2002 1:20 PM Subject: [biofuel] No more French fry WVO? http://www.planetark.org/dailynewsstory.cfm/newsid/16556/story.htm Experts to examine safety of crisps, French fries SWITZERLAND: June 25, 2002 GENEVA - World Health Organisation (WHO) food safety experts start three days of meetings yesterday to probe reports that potato crisps, French fries and other carbohydrate-rich foods contain a cancer-causing substance. http://enn.com/news/wire-stories/2002/06/06252002/ap_47645.asp - 6/25/2002 WHO hosts urgent meeting on acrylamide in food http://enn.com/news/wire-stories/2002/06/06282002/ap_47695.asp - 6/28/2002 Scientists cite real concern about acrylamide in food Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send quot;unsubscribequot; messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Yahoo! Groups Sponsor -~-- Free $5 Love Reading Risk Free! http://us.click.yahoo.com/3PCXaC/PfREAA/Ey.GAA/FGYolB/TM -~- Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send quot;unsubscribequot; messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [biofuel] No more French fry WVO?
http://enn.com/news/wire-stories/2002/06/06252002/ap_47645.asp - 6/25/2002 WHO hosts urgent meeting on acrylamide in food Permit me to carry the thought process a wee tad further for us common laypersons. Anyone ever given much thought to the decay product of glycerin under conditions of inadequate combustion? Oddly enough it's call acrolein - rather toxic to living things, especially breathing things, at least according to every MSDS sheet I've read. So take that decay consideration, slap a bunch of potato shreds in a high temp tri-glyceride bath, or bake a grain product with a high oil content, and what might you think you'll get? Perhaps acrilomide? Glycerin, in the form of triglycerides, exposed to semi-high temps of frying and baking...~350* Fahrenheit. But then there is this statement: The Swedish researchers said that fried, oven-baked, and deep-fried potato and cereal products may contain high levels of acrylamide. The same results were not found in boiled products. A bit odd that water boils at 212* Fahrenheit, ~140* lower and a considerably less destructive temp range than baking or frying. Makes one wonder if there won't be a rush in the appliance and food processing markets for products that can cook foods in the temperature range of boiling, rather than frying and baking. Also makes one wonder if there won't be a rush for oils that are 100% FFAs, rather than a blend of tri-glycerides and FFAs. That would sure throw a kink in biodiesel manufacture when using waste restaurant oils. It would force every shadetree biodieseler to move towards high pressure esterification, rather than STP transesterification. It would also put some pressure on the animal feed and rendering industries to move away from using reprocessed WVOs as protein/energy additives to feed. Would be a shame to kill the AKC registered family pet simply by feeding it Puppy Chow. Todd Swearingen Yahoo! Groups Sponsor -~-- Free $5 Love Reading Risk Free! http://us.click.yahoo.com/3PCXaC/PfREAA/Ey.GAA/FGYolB/TM -~- Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send quot;unsubscribequot; messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
