By Allison Lampert

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

Fuel manufacturers and jetmakers are keen to showcase novel kinds of aviation fuel deemed less hazardous to the climate, from used cooking oil to the distinctly less glamorous meat waste.

Business jet operators, like airlines, have actually bowed to environmental pressure on air travel and devoted to cutting in half carbon emissions by 2050 compared with 2005.

Their hope is that adopting eco-friendly fuel to suppress emissions might make company jets more appealing to environmentally conscious buyers - particularly corporations facing questions over sustainability from shareholders or green campaign groups.

The availability of less polluting personal jets could likewise spare the rich and popular the unfavorable promotion experienced by Britain's Prince Harry and his partner Meghan over a recent private jet trip to southern France.

Five Gulfstream jets on display screen in Las Vegas are utilizing 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 market," stated Bryan Sherbacow, chief industrial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

Some of the other 79 airplane on display screen are expected to be powered by 150,000 gallons of other renewable fuel mixes expected to be pumped at the program.

FLIGHT SHAMING

Private jets account for less than 0.1% of total annual carbon emissions worldwide, however can emit, on average, as much as 20 times more carbon emissions per guest mile than jetliners, according to the London-based private charter company Victor.

Prince Harry has actually defended his periodic usage of private jets to guarantee his family's security, and has stated that on the rare events he does not fly commercially he offsets his emissions.

But planemakers state events such as the furore over his itinerary have actually added fresh obstacles for an industry currently making every effort to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming involving making use of private jets are unfortunate when you think about that our market has delivered fuel effectiveness improvements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

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

But even an image remodeling - with jets sporting sticker labels like "this aircraft flies on eco-friendly fuels" and organisers adding alternative fuel pumps for going to airplanes - is not likely to please all critics at the Oct 22-24 luxury jet event.

Environmentalists and some analysts remain hesitant that biojetfuels, typically combined 50-50 with kerosene, will make a substantial influence on public understandings about high-end travel.

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

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

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

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

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions contributed in a usage research study his company just recently completed for a Fortune 500 company.

"At the end of the day, I believe that cost, expense per hour, variety, speed and performance, that's still the (sales) chauffeur. But I think people are ending up being more familiar with the sustainability of operations and how it affects the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)