By Allison Lampert

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

Fuel producers and jetmakers are keen to showcase novel kinds of air travel fuel deemed less hazardous to the climate, from used cooking oil to the clearly less glamorous meat waste.

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

Their hope is that embracing eco-friendly fuel to curb emissions could make company jets more appealing to ecologically mindful buyers - especially corporations dealing with questions over sustainability from shareholders or green campaign groups.

The accessibility of less contaminating personal jets could likewise spare the abundant and popular the unfavorable promotion experienced by Britain's Prince Harry and his spouse Meghan over a current personal jet trip 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 include "fats, grease and oils that are by-products of the food market," said Bryan Sherbacow, chief industrial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions globally, however can produce, on average, up to 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter firm Victor.

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

But planemakers state events such as the furore over his schedule have actually added fresh difficulties for an industry already striving to validate its contribution to cutting corporate costs.

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

Bombardier believes 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 sticker labels like "this airplane flies on sustainable fuels" and organisers adding pumps for visiting planes - is unlikely to satisfy all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some analysts remain hesitant that biojetfuels, generally combined 50-50 with kerosene, will make a considerable effect on public perceptions about luxury travel.

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

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

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

Corporate charter companies and consultants are likewise seeing more interest from customers who want to buy carbon credits to balance out emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions contributed in a corporate jet usage study his business just recently completed 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 believe people are ending up being more mindful of the sustainability of operations and how it affects the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)