By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest market program in Las Vegas luxury jets are enticing buyers with their sleek shapes, luxurious cabins - and significantly, their use of alternative fuels.

Fuel producers and jetmakers are eager to showcase unique types of aviation fuel deemed less hazardous to the climate, from used cooking oil to the clearly less glamorous meat waste.

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

Their hope is that embracing eco-friendly fuel to curb emissions might make company jets more appealing to ecologically mindful buyers - especially corporations dealing with questions over sustainability from shareholders or green campaign groups.

The accessibility of less polluting personal jets might likewise spare the abundant and famous the unfavorable promotion experienced by Britain's Prince Harry and his spouse Meghan over a current personal jet trip to southern France.

Five Gulfstream jets on display in Las Vegas are utilizing 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 industry," said Bryan Sherbacow, chief industrial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

Some of the other 79 airplane on display screen 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 total yearly carbon emissions globally, but can produce, typically, as much as 20 times more carbon emissions per passenger mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has protected his periodic use of private jets to guarantee his family's safety, and has actually said that on the rare celebrations he does not fly commercially he offsets his emissions.

But planemakers say occurrences such as the furore over his schedule have included fresh challenges for an industry already aiming to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming including the usage of private jets are regrettable when you consider that our market has actually delivered fuel efficiency improvements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image transformation - with jets sporting stickers like "this airplane flies on sustainable fuels" and organisers including alternative fuel pumps for visiting airplanes - is not likely to please all critics at the Oct 22-24 luxury jet event.

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

"No quantity of jatropha curcas or Brazil-nut fuel can make organization jets look eco-friendly," said air travel expert Richard Aboulafia.

Demand from organization 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 broaden production approximately 150 million gallons by 2022.

Corporate charter business and experts are likewise seeing more interest from consumers who wish to buy carbon credits to offset emissions from their flights.

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

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