By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry program in Las Vegas high-end jets are enticing purchasers with their streamlined silhouettes, luxurious cabins - and significantly, their use of alternative fuels.

Fuel producers and jetmakers are eager to showcase unique forms of air travel fuel considered less hazardous to the environment, from utilized cooking oil to the definitely less glamorous meat waste.

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

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

The accessibility of less contaminating personal jets might likewise spare the abundant and well-known the unfavorable promotion experienced by Britain's Prince Harry and his other half Meghan over a current private jet journey to southern France.

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

The most recent waste-based fuels consist of "fats, grease and oils that are by-products of the food market," said Bryan Sherbacow, chief business officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

Some of the other 79 aircraft on screen are anticipated to be powered by 150,000 gallons of other eco-friendly fuel blends anticipated to be pumped at the program.

FLIGHT SHAMING

Private jets account for less than 0.1% of overall annual carbon emissions globally, however can emit, typically, as much as 20 times more carbon emissions per guest mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has safeguarded his occasional use of private jets to guarantee his household'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 schedule have added fresh challenges for a market already making every effort to validate its contribution to cutting business expenses.

"Incidents of flight shaming including using private jets are unfortunate when you consider that our market has actually delivered fuel performance improvements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image transformation - with jets sporting stickers like "this airplane flies on sustainable fuels" and organisers adding alternative fuel pumps for checking out planes - is not likely to satisfy all critics at the Oct 22-24 luxury jet occasion.

Environmentalists and some experts stay skeptical that biojetfuels, typically mixed 50-50 with kerosene, will make a considerable influence on public understandings about high-end travel.

"No amount of jatropha curcas or Brazil-nut fuel can make organization jets look eco-friendly," stated 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 stated.

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

Corporate charter business and experts are also seeing more interest from customers 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 utilization study his company just recently finished for a Fortune 500 company.

"At the end of the day, I think that cost, cost per hour, range, speed and performance, that's still the (sales) driver. But I think people are ending up being more familiar with the sustainability of operations and how it affects the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)