By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market program in Las Vegas high-end jets are drawing buyers with their smooth silhouettes, luxurious cabins - and increasingly, their usage of alternative fuels.

Fuel manufacturers and jetmakers are eager to display unique types of aviation fuel considered less hazardous to the environment, from used cooking oil to the noticeably less glamorous meat waste.

Business jet operators, like airline companies, have actually acquiesced environmental pressure on aviation and devoted to cutting in half carbon emissions by 2050 compared to 2005.

Their hope is that embracing renewable fuel to suppress emissions might make business jets more appealing to environmentally conscious purchasers - particularly corporations dealing with questions over sustainability from investors or green campaign groups.

The availability of less contaminating private jets could likewise spare the abundant and popular the unfavorable promotion experienced by Britain's Prince Harry and his partner Meghan over a current private 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 by-products of the food industry," stated Bryan Sherbacow, primary business officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product 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 program.

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 passenger mile than jetliners, according to the London-based personal charter company Victor.

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

But planemakers state events such as the furore over his travel plan have actually added fresh challenges for an industry already aiming to validate its contribution to cutting corporate expenses.

"Incidents of flight shaming involving making use of private jets are regrettable when you consider that our market has provided fuel efficiency enhancements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

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

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

Environmentalists and some experts stay hesitant that biojetfuels, usually mixed 50-50 with kerosene, will make a significant impact on public perceptions about luxury 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 renewable fuels now far exceeds 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 approximately 150 million gallons by 2022.

Corporate charter companies and experts are likewise seeing more interest from customers who desire to purchase 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 price, expense per hour, variety, speed and performance, that's still the (sales) chauffeur. But I think people are ending up being more familiar with the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)