By Allison Lampert

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

Fuel manufacturers and jetmakers are eager to showcase novel types of aviation fuel considered less harmful to the climate, from utilized cooking oil to the noticeably less attractive meat waste.

Business jet operators, like airlines, have acquiesced environmental pressure on air travel and dedicated to halving carbon emissions by 2050 compared to 2005.

Their hope is that adopting eco-friendly fuel to curb emissions might make organization jets more attractive to environmentally mindful purchasers - particularly corporations dealing with questions over sustainability from investors or green project groups.

The accessibility of less contaminating private jets might likewise spare the abundant and popular the negative promotion experienced by Britain's Prince Harry and his better half Meghan over a recent private jet trip 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 utilized 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 eco-friendly fuel mixes anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets account for less than 0.1% of total annual carbon emissions globally, but can release, typically, approximately 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 use of private jets to ensure his family's safety, and has actually said that on the rare events he does not fly commercially he offsets his emissions.

But planemakers say occurrences such as the furore over his schedule have actually included fresh challenges for a market currently making every effort to justify its contribution to cutting business expenses.

"Incidents of flight shaming including making use of private jets are unfortunate when you think about that our market has provided fuel effectiveness improvements of 40% over the previous 40 years," stated Bombardier Aviation President David Coleal.

Bombardier thinks 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 sticker labels like "this aircraft flies on eco-friendly fuels" and organisers adding alternative fuel pumps for checking out aircrafts - is not likely to please all critics at the Oct 22-24 luxury jet occasion.

Environmentalists and some analysts remain hesitant that biojetfuels, typically mixed 50-50 with kerosene, will make a substantial impact 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 expert Richard Aboulafia.

Demand from company jet operators for eco-friendly fuels now far goes beyond supply and their interest might drive future production, Sherbacow said.

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

Corporate charter companies 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 contributed in a corporate jet utilization research study his company recently completed for a Fortune 500 business.

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