By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest industry program in Las Vegas luxury jets are enticing purchasers with their smooth shapes, plush cabins - and significantly, their use of alternative fuels.

Fuel producers and jetmakers are eager to showcase unique forms of aviation fuel deemed less damaging to the environment, from utilized cooking oil to the definitely less glamorous meat waste.

Business jet operators, like airline companies, have acquiesced ecological pressure on aviation and committed to halving carbon emissions by 2050 compared to 2005.

Their hope is that embracing renewable fuel to curb emissions might make organization jets more appealing to ecologically conscious purchasers - specifically corporations facing questions over sustainability from shareholders or green project groups.

The schedule of less contaminating personal jets could also spare the rich and well-known the unfavorable promotion experienced by Britain's Prince Harry and his other half Meghan over a recent personal jet journey to southern France.

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 market," stated Bryan Sherbacow, chief commercial 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 airplane on display screen are expected to be powered by 150,000 gallons of other sustainable fuel mixes expected to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions worldwide, however can give off, on average, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has defended his periodic use of private jets to ensure his household's safety, and has actually said that on the rare occasions he does not fly commercially he offsets his emissions.

But planemakers state incidents such as the furore over his travel plan have included fresh challenges for an industry currently making every effort to justify its contribution to cutting corporate costs.

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

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

But even an image remodeling - with jets sporting sticker labels like "this airplane flies on eco-friendly fuels" and organisers including alternative fuel pumps for checking out planes - is not likely to please all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some analysts stay skeptical that biojetfuels, normally mixed 50-50 with kerosene, will make a considerable effect on public understandings about high-end travel.

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

Demand from service jet operators for renewable fuels now far exceeds supply and their interest could drive future production, Sherbacow stated.

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

Corporate charter companies and consultants are likewise seeing more interest from customers who wish to buy carbon credits to offset emissions from their flights.

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

"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 ending up being more knowledgeable about the sustainability of operations and how it impacts the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)