By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry show in Las Vegas luxury jets are luring purchasers with their sleek silhouettes, plush cabins - and progressively, their usage of alternative fuels.

Fuel producers and jetmakers are keen to display unique kinds of air travel fuel considered less harmful to the climate, from utilized cooking oil to the distinctly less attractive meat waste.

Business jet operators, like airline companies, have bowed to environmental pressure on aviation and devoted to halving carbon emissions by 2050 compared with 2005.

Their hope is that adopting sustainable fuel to suppress emissions might make organization jets more appealing to environmentally mindful buyers - especially corporations dealing with concerns over sustainability from shareholders or green campaign groups.

The accessibility of less contaminating private jets could also spare the abundant and well-known the unfavorable promotion experienced by Britain's Prince Harry and his spouse 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 newest waste-based fuels consist of "fats, grease and oils that are byproducts of the food industry," said Bryan Sherbacow, primary industrial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets account for less than 0.1% of overall annual carbon emissions worldwide, however can discharge, typically, as much as 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter company Victor.

Prince Harry has protected his periodic usage of personal jets to guarantee his household's safety, and has actually said that on the uncommon occasions he does not fly commercially he offsets his emissions.

But planemakers state events such as the furore over his schedule have actually added fresh obstacles for an industry already striving to validate its contribution to cutting business expenses.

"Incidents of flight shaming including the usage of personal jets are unfortunate when you think about that our industry has actually delivered fuel performance enhancements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

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

But even an image makeover - with jets sporting stickers like "this aircraft flies on sustainable fuels" and organisers adding alternative fuel pumps for visiting airplanes - is not likely to satisfy all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some experts remain hesitant that biojetfuels, usually mixed 50-50 with kerosene, will make a significant influence on public understandings about luxury travel.

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

Demand from company jet operators for renewable 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, could broaden production as much as 150 million gallons by 2022.

Corporate charter business and specialists are likewise seeing more interest from consumers who wish to buy 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 utilization study his company just recently finished for a Fortune 500 business.

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