By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest market program in Las Vegas high-end jets are enticing buyers with their smooth silhouettes, luxurious cabins - and significantly, their use of alternative fuels.

Fuel manufacturers and jetmakers are keen to display unique kinds of air travel fuel deemed less damaging to the environment, from utilized cooking oil to the definitely less attractive meat waste.

Business jet operators, like airlines, have actually acquiesced environmental pressure on aviation and committed to halving carbon emissions by 2050 compared with 2005.

Their hope is that adopting sustainable fuel to suppress emissions might make business jets more attractive to ecologically conscious buyers - specifically corporations facing questions over sustainability from shareholders or green campaign groups.

The schedule of less polluting private jets could also spare the abundant and well-known the negative publicity experienced by Britain's Prince Harry and his better half Meghan over a recent personal jet trip to southern France.

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

The most current waste-based fuels consist of "fats, grease and oils that are by-products of the food industry," stated Bryan Sherbacow, chief commercial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

Some of the other 79 airplane on screen are expected to be powered by 150,000 gallons of other renewable fuel blends expected to be pumped at the show.

FLIGHT SHAMING

Private jets account for less than 0.1% of overall yearly carbon emissions globally, but can discharge, typically, as much as 20 times more carbon emissions per passenger mile than jetliners, according to the London-based private charter company Victor.

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

But planemakers state incidents such as the furore over his schedule have included fresh difficulties for a market already aiming to validate its contribution to cutting business costs.

"Incidents of flight shaming including using personal jets are regrettable when you consider that our industry has actually delivered fuel performance enhancements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

Bombardier thinks increased sustainable fuel use will assist the industry make inroads with corporations and rich purchasers. According to industry information, billionaires only have a 19% company jet ownership rate.

But even an image makeover - with jets sporting sticker labels like "this aircraft flies on sustainable fuels" and organisers including alternative fuel pumps for checking out aircrafts - is not likely to satisfy all critics at the Oct 22-24 luxury jet event.

Environmentalists and some experts remain doubtful that biojetfuels, normally combined 50-50 with kerosene, will make a substantial influence on public understandings about luxury travel.

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

Demand from service jet operators for eco-friendly fuels now far goes beyond supply and their interest might drive future production, Sherbacow said.

World Energy, which produces 40 million gallons of biofuel at its California plant, could broaden production approximately 150 million gallons by 2022.

Corporate charter companies and experts are also seeing more interest from consumers who want to buy carbon credits to offset emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, stated emissions played a function in a business jet usage research study his business just recently completed for a Fortune 500 company.

"At the end of the day, I think that price, expense per hour, variety, speed and efficiency, that's still the (sales) motorist. But I believe individuals are becoming more familiar with the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)