By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest industry program in Las Vegas luxury jets are tempting buyers with their smooth shapes, luxurious cabins - and progressively, their usage of alternative fuels.

Fuel manufacturers and jetmakers are eager to forms of air travel fuel deemed less harmful to the climate, from used cooking oil to the clearly less attractive meat waste.

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

Their hope is that embracing eco-friendly fuel to suppress emissions might make organization jets more attractive to environmentally conscious purchasers - specifically corporations dealing with concerns over sustainability from shareholders or green project groups.

The accessibility of less contaminating personal jets might likewise spare the rich and popular the unfavorable promotion experienced by Britain's Prince Harry and his wife Meghan over a recent private jet journey 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 producer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our item is inedible."

Some of the other 79 airplane on display are anticipated to be powered by 150,000 gallons of other sustainable fuel blends anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets account for less than 0.1% of total annual carbon emissions worldwide, but can emit, typically, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter company Victor.

Prince Harry has protected his occasional usage of personal jets to guarantee his family's safety, and has said that on the unusual occasions he does not fly commercially he offsets his emissions.

But planemakers say incidents such as the furore over his travel plan have actually included fresh challenges for a market already aiming to justify its contribution to cutting corporate costs.

"Incidents of flight shaming involving making use of personal jets are unfortunate when you think about that our market has provided fuel efficiency improvements of 40% over the past 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 market information, billionaires just have a 19% organization jet ownership rate.

But even an image makeover - with jets sporting sticker labels like "this airplane flies on renewable fuels" and organisers including alternative fuel pumps for checking out airplanes - is unlikely to please all critics at the Oct 22-24 high-end jet occasion.

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

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

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

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

Corporate charter companies and specialists are also seeing more interest from clients who desire to purchase carbon credits to balance out emissions from their flights.

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

"At the end of the day, I believe that cost, expense per hour, range, speed and efficiency, that's still the (sales) chauffeur. But I believe individuals are ending up being more knowledgeable about the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)