By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry show in Las Vegas luxury jets are tempting buyers with their streamlined shapes, plush cabins - and progressively, their use of alternative fuels.

Fuel producers and jetmakers are eager to showcase novel kinds of aviation fuel considered less hazardous to the environment, from used cooking oil to the noticeably less glamorous meat waste.

Business jet operators, like airline companies, have bowed to environmental pressure on air travel and committed to halving carbon emissions by 2050 compared to 2005.

Their hope is that embracing sustainable fuel to suppress emissions might make organization jets more appealing to ecologically mindful buyers - especially corporations dealing with questions over sustainability from shareholders or green project groups.

The availability of less contaminating personal jets could also spare the rich and well-known the unfavorable publicity experienced by Britain's Prince Harry and his wife Meghan over a current private jet trip to southern France.

Five Gulfstream jets on display in Las Vegas are using California-produced fuel from inedible beef tallow.

The latest waste-based fuels include "fats, grease and oils that are byproducts of the food industry," stated Bryan Sherbacow, chief commercial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our item is inedible."

Some of the other 79 aircraft on display screen are anticipated to be powered by 150,000 gallons of other sustainable fuel mixes anticipated to be pumped at the program.

FLIGHT SHAMING

Private jets account for less than 0.1% of overall annual carbon emissions internationally, but can release, typically, up to 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has actually safeguarded his occasional usage of private jets to ensure his family's safety, and has actually said that on the rare occasions he does not fly commercially he offsets his emissions.

But planemakers state events such as the furore over his travel plan have included fresh difficulties for an industry already striving to validate its contribution to cutting corporate costs.

"Incidents of flight shaming including the usage of personal jets are unfortunate when you think about that our market has delivered fuel efficiency enhancements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

Bombardier thinks increased sustainable fuel usage will help the market make inroads with corporations and wealthy buyers. According to industry data, billionaires only have a 19% business jet ownership rate.

But even an image makeover - with jets sporting stickers like "this airplane flies on sustainable fuels" and organisers including alternative fuel pumps for visiting airplanes - is unlikely to satisfy all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some analysts stay doubtful that biojetfuels, generally blended 50-50 with kerosene, will make a substantial impact on public understandings about high-end travel.

"No amount of jatropha curcas or Brazil-nut fuel can make service jets look eco-friendly," stated aviation analyst Richard Aboulafia.

Demand from business jet operators for renewable fuels now far exceeds supply and their interest might drive future production, Sherbacow said.

World Energy, which produces 40 million gallons of biofuel at its California plant, might expand production as much as 150 million gallons by 2022.

Corporate charter business and consultants are likewise seeing more interest from clients who want to purchase carbon credits to offset emissions from their .

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions contributed in a corporate jet utilization research study his business just recently finished for a Fortune 500 business.

"At the end of the day, I think that price, cost per hour, variety, speed and performance, that's still the (sales) motorist. But I believe individuals are ending up being more knowledgeable about the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)