By Allison Lampert

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

Fuel manufacturers and jetmakers are eager to display novel types of aviation fuel deemed less hazardous to the climate, from utilized cooking oil to the clearly less glamorous meat waste.

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

Their hope is that adopting sustainable fuel to suppress emissions might make business jets more attractive to environmentally conscious purchasers - specifically corporations facing questions over sustainability from shareholders or green campaign groups.

The schedule of less polluting private jets could also spare the abundant and popular the negative publicity experienced by Britain's Prince Harry and his other half Meghan over a recent personal jet trip to southern France.

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

The current waste-based fuels include "fats, grease and oils that are by-products of the food industry," said Bryan Sherbacow, primary commercial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

A few of the other 79 aircraft on display are expected to be powered by 150,000 gallons of other sustainable fuel blends anticipated to be pumped at the program.

FLIGHT SHAMING

Private jets account for less than 0.1% of total yearly carbon emissions globally, but can emit, usually, up to 20 times more carbon emissions per guest mile than jetliners, according to the London-based private charter firm Victor.

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

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

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

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

But even an image remodeling - with jets sporting stickers like "this airplane flies on renewable fuels" and organisers adding alternative fuel pumps for going to airplanes - is unlikely to please all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some analysts stay hesitant that biojetfuels, normally mixed 50-50 with kerosene, will make a considerable influence on public perceptions about luxury travel.

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

Demand from business jet operators for sustainable fuels now far goes beyond supply and their interest might drive future production, Sherbacow stated.

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

Corporate charter companies and consultants are also seeing more interest from consumers who desire to purchase carbon credits to offset emissions from their flights.

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

"At the end of the day, I think that price, expense per hour, variety, speed and efficiency, that's still the (sales) chauffeur. But I think individuals are becoming more knowledgeable about the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)