By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest market show in Las Vegas high-end jets are drawing buyers with their smooth silhouettes, luxurious cabins - and progressively, their usage of alternative fuels.

Fuel manufacturers and jetmakers are eager to showcase novel kinds of aviation fuel considered less harmful to the climate, from utilized cooking oil to the noticeably less attractive meat waste.

Business jet operators, like airline companies, have actually acquiesced environmental pressure on aviation and committed to cutting in half carbon emissions by 2050 compared with 2005.

Their hope is that adopting eco-friendly fuel to curb emissions might make business jets more appealing to environmentally mindful buyers - especially corporations facing questions over sustainability from shareholders or green campaign groups.

The schedule of less polluting private jets might likewise spare the abundant and popular 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 current waste-based fuels consist of "fats, grease and oils that are by-products of the food market," said Bryan Sherbacow, chief business 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 are anticipated to be powered by 150,000 gallons of other eco-friendly fuel mixes expected to be pumped at the program.

FLIGHT SHAMING

Private jets account for less than 0.1% of overall yearly carbon emissions worldwide, however can discharge, usually, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter firm Victor.

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

But planemakers state events such as the furore over his schedule have actually added fresh difficulties for an industry currently striving to justify its contribution to cutting business expenses.

"Incidents of flight shaming involving using private jets are regrettable when you think about that our industry has provided fuel effectiveness improvements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image - with jets sporting stickers like "this aircraft flies on eco-friendly fuels" and organisers adding alternative fuel pumps for visiting airplanes - is unlikely to please all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some experts stay doubtful that biojetfuels, generally combined 50-50 with kerosene, will make a substantial effect on public perceptions about high-end travel.

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

Demand from service 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 companies and specialists are likewise seeing more interest from customers who wish to buy carbon credits to balance out emissions from their flights.

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

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