By Allison Lampert

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

Fuel producers and jetmakers are keen to display unique types of aviation fuel deemed less hazardous to the climate, from utilized cooking oil to the clearly less glamorous meat waste.

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

Their hope is that embracing eco-friendly fuel to suppress emissions might make business jets more appealing to ecologically mindful buyers - specifically corporations facing concerns over sustainability from investors or green campaign groups.

The accessibility of less contaminating private jets might likewise spare the rich and famous the unfavorable publicity experienced by Britain's Prince Harry and his partner Meghan over a recent personal jet journey 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 market," said Bryan Sherbacow, chief business officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets account for less than 0.1% of total yearly carbon emissions worldwide, however can give off, on average, up to 20 times more per guest mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has actually protected his occasional usage of personal jets to ensure his household's security, and has actually stated that on the unusual events he does not fly commercially he offsets his emissions.

But planemakers say incidents such as the furore over his schedule have actually added fresh challenges for an industry already striving to validate its contribution to cutting corporate expenses.

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

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

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

Environmentalists and some experts stay doubtful that biojetfuels, typically combined 50-50 with kerosene, will make a substantial effect on public perceptions about luxury travel.

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

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

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

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

"At the end of the day, I believe that price, cost per hour, range, speed and efficiency, that's still the (sales) driver. But I think individuals are becoming more familiar with the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)