By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest industry program in Las Vegas high-end jets are drawing purchasers with their smooth shapes, plush cabins - and increasingly, their use of alternative fuels.

Fuel producers and jetmakers are keen to showcase unique kinds of air travel fuel considered less damaging to the environment, from utilized cooking oil to the definitely less glamorous meat waste.

Business jet operators, like airline companies, have bowed to environmental pressure on air travel and devoted 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 mindful buyers - particularly corporations dealing with concerns over sustainability from investors or green campaign groups.

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

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

The most recent waste-based fuels include "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 used by Gulfstream.

"All of our item is inedible."

A few of the other 79 airplane on display are expected to be powered by 150,000 gallons of other eco-friendly fuel mixes expected to be pumped at the show.

FLIGHT SHAMING

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

Prince Harry has safeguarded his occasional usage of private jets to ensure his household's safety, and has stated that on the unusual 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 obstacles for a market already striving to justify its contribution to cutting corporate costs.

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

Bombardier thinks increased sustainable fuel use will help the market make inroads with corporations and wealthy purchasers. According to market information, billionaires only have a 19% business jet ownership rate.

But even an image transformation - with jets sporting sticker labels like "this airplane flies on eco-friendly fuels" and organisers adding alternative fuel pumps for going to planes - is not likely to satisfy all critics at the Oct 22-24 high-end jet event.

Environmentalists and some experts remain skeptical that biojetfuels, normally combined 50-50 with kerosene, will make a considerable influence on public perceptions about high-end travel.

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

Demand from service jet operators for eco-friendly 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, could broaden production up to 150 million gallons by 2022.

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

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

"At the end of the day, I think that rate, expense per hour, variety, speed and performance, that's still the (sales) motorist. But I think 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)