By Allison Lampert

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

Fuel producers and jetmakers are eager to display unique types of air travel fuel deemed less damaging to the climate, from used cooking oil to the noticeably less glamorous meat waste.

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

Their hope is that adopting sustainable fuel to suppress emissions could make business jets more appealing to environmentally mindful buyers - specifically corporations facing concerns over sustainability from shareholders or green campaign groups.

The availability of less polluting private jets might also spare the abundant and well-known the negative promotion experienced by Britain's Prince Harry and his better half Meghan over a current personal jet journey to southern France.

Five Gulfstream jets on screen in Las Vegas are using California-produced fuel from inedible beef tallow.

The most recent waste-based fuels consist of "fats, grease and oils that are byproducts of the food industry," stated Bryan Sherbacow, primary commercial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

A few of the other 79 aircraft on display are expected to be powered by 150,000 gallons of other renewable fuel blends anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions internationally, but can release, typically, as much as 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter company Victor.

Prince Harry has actually protected his occasional usage of personal jets to ensure his family's safety, and has actually said that on the uncommon events he does not fly commercially he offsets his emissions.

But planemakers say incidents such as the furore over his travel plan have actually included fresh challenges for an industry currently aiming to justify its contribution to cutting business expenses.

"Incidents of flight shaming including the use of private jets are regrettable when you consider that our industry has delivered fuel efficiency enhancements of 40% over the previous 40 years," stated Bombardier Aviation President David Coleal.

Bombardier believes increased sustainable fuel use will help 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 renewable fuels" and organisers adding alternative fuel pumps for visiting airplanes - is not likely to please all critics at the Oct 22-24 luxury jet occasion.

Environmentalists and some analysts stay skeptical that biojetfuels, typically blended 50-50 with kerosene, will make a substantial effect on public perceptions about high-end travel.

"No quantity of Jatropha or Brazil-nut fuel can make organization jets look eco-friendly," said air travel analyst Richard Aboulafia.

Demand from company jet operators for now far goes beyond supply and their interest could drive future production, Sherbacow stated.

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

Corporate charter business and consultants are likewise seeing more interest from clients who wish to buy carbon credits to offset emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions played a function in a business jet utilization research study his company just recently finished for a Fortune 500 business.

"At the end of the day, I believe that rate, cost per hour, range, speed and efficiency, that's still the (sales) motorist. But I believe 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)