By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest market show in Las Vegas luxury jets are luring purchasers with their streamlined silhouettes, luxurious cabins - and increasingly, their use of alternative fuels.

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

Business jet operators, like airlines, have actually acquiesced environmental pressure on aviation and dedicated to halving carbon emissions by 2050 compared to 2005.

Their hope is that adopting eco-friendly fuel to curb emissions might make business jets more appealing to ecologically mindful buyers - specifically corporations facing questions over sustainability from shareholders or green project groups.

The accessibility of less polluting private jets might also spare the abundant and well-known the negative promotion experienced by Britain's Prince Harry and his other half Meghan over a current 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 byproducts of the food industry," stated Bryan Sherbacow, chief business 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 screen are anticipated to be powered by 150,000 gallons of other eco-friendly fuel mixes anticipated to be pumped at the program.

FLIGHT SHAMING

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

Prince Harry has safeguarded his occasional use of private jets to guarantee his household's security, and has actually said that on the rare celebrations he does not fly commercially he offsets his emissions.

But planemakers state events such as the furore over his travel plan have added fresh obstacles for a market currently striving to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming involving using private jets are unfortunate when you think about that our industry has actually 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 wealthy buyers. According to industry data, billionaires only have a 19% organization jet ownership rate.

But even an image remodeling - with jets sporting stickers like "this aircraft flies on sustainable fuels" and organisers adding alternative fuel pumps for going to aircrafts - is unlikely to satisfy all critics at the Oct 22-24 luxury jet event.

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

"No amount of jatropha curcas or Brazil-nut fuel can make company jets look eco-friendly," stated aviation analyst Richard Aboulafia.

Demand from service jet operators for sustainable fuels now far goes beyond supply and their interest could drive future production, Sherbacow said.

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

Corporate charter companies and experts are likewise 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, said emissions played a role in a corporate jet usage study his just recently completed for a Fortune 500 business.

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