By Allison Lampert

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

Fuel manufacturers and jetmakers are eager to showcase novel types of air travel fuel deemed less damaging to the environment, from used cooking oil to the clearly less attractive meat waste.

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

Their hope is that adopting renewable fuel to suppress emissions might make service jets more attractive to ecologically mindful buyers - specifically corporations facing concerns over sustainability from investors or green campaign groups.

The availability of less polluting personal jets might likewise spare the abundant and popular the negative promotion experienced by Britain's Prince Harry and his wife Meghan over a current private 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 market," said 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 aircraft on screen are anticipated to be powered by 150,000 gallons of other renewable fuel blends anticipated to be pumped at the program.

FLIGHT SHAMING

Private jets account for less than 0.1% of overall annual carbon emissions internationally, but can give off, typically, 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 defended 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 say incidents such as the furore over his have included fresh difficulties for an industry already making every effort to validate its contribution to cutting corporate costs.

"Incidents of flight shaming including using personal jets are regrettable when you think about that our industry has actually provided fuel effectiveness 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 rich buyers. According to industry information, billionaires only have a 19% organization jet ownership rate.

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

Environmentalists and some experts stay skeptical that biojetfuels, generally blended 50-50 with kerosene, will make a substantial influence on public understandings about luxury travel.

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

Demand from organization jet operators for renewable fuels now far exceeds supply and their interest could drive future production, Sherbacow said.

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

Corporate charter companies 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 business jet usage study his business just recently completed for a Fortune 500 company.

"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 ending up being more conscious of the sustainability of operations and how it affects the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)