By Allison Lampert

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

Fuel producers and jetmakers are keen to showcase unique forms of air travel fuel considered less damaging to the climate, from used cooking oil to the clearly less glamorous meat waste.

Business jet operators, like airline companies, have actually acquiesced ecological pressure on air travel and dedicated to cutting in half carbon emissions by 2050 to 2005.

Their hope is that adopting sustainable fuel to suppress emissions might make company jets more attractive to ecologically mindful purchasers - especially corporations facing questions over sustainability from investors or green campaign groups.

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

Five Gulfstream jets on display screen 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, primary business officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

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

FLIGHT SHAMING

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

Prince Harry has defended his periodic usage of private jets to ensure his household's security, and has stated that on the unusual celebrations he does not fly commercially he offsets his emissions.

But planemakers state occurrences such as the furore over his schedule have added fresh difficulties for a market already aiming to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming involving making use of personal jets are regrettable when you consider that our industry has actually provided fuel effectiveness improvements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

Bombardier thinks increased sustainable fuel usage will assist the industry make inroads with corporations and wealthy purchasers. According to market data, billionaires just have a 19% service jet ownership rate.

But even an image transformation - with jets sporting stickers like "this airplane flies on eco-friendly fuels" and organisers adding alternative fuel pumps for checking out aircrafts - is unlikely to please all critics at the Oct 22-24 luxury jet occasion.

Environmentalists and some experts remain doubtful that biojetfuels, normally mixed 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 service jets look eco-friendly," stated air travel expert Richard Aboulafia.

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

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

Corporate charter companies and consultants are likewise seeing more interest from customers who wish to buy carbon credits to balance out emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, stated emissions played a function in a corporate jet usage study his company just recently completed for a Fortune 500 company.

"At the end of the day, I believe that price, expense per hour, range, speed and efficiency, 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)