By Allison Lampert

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

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

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

Their hope is that embracing sustainable fuel to suppress emissions might make organization jets more appealing to environmentally mindful buyers - specifically corporations facing questions over sustainability from investors or green project groups.

The availability of less polluting personal jets could likewise spare the abundant and well-known the unfavorable promotion experienced by Britain's Prince Harry and his partner Meghan over a current personal jet trip to .

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

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

"All of our item is inedible."

A few of the other 79 aircraft on screen are expected 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 total annual carbon emissions globally, but can give off, typically, approximately 20 times more carbon emissions per passenger mile than jetliners, according to the London-based private charter company Victor.

Prince Harry has defended his periodic use of personal jets to guarantee his household's security, and has stated that on the uncommon occasions he does not fly commercially he offsets his emissions.

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

"Incidents of flight shaming including making use of private jets are unfortunate when you consider that our industry has provided fuel efficiency enhancements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

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

But even an image makeover - with jets sporting stickers like "this airplane flies on renewable fuels" and organisers adding alternative fuel pumps for going to aircrafts - is not likely to please all critics at the Oct 22-24 luxury jet occasion.

Environmentalists and some analysts remain skeptical that biojetfuels, generally combined 50-50 with kerosene, will make a substantial impact on public perceptions about luxury travel.

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

Demand from company jet operators for eco-friendly fuels now far surpasses supply and their interest might drive future production, Sherbacow stated.

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

Corporate charter business and specialists are also seeing more interest from clients who desire 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 business just recently completed for a Fortune 500 company.

"At the end of the day, I think that rate, expense per hour, variety, speed and efficiency, that's still the (sales) driver. But I think people are ending up being more conscious of the sustainability of operations and how it impacts the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)