By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market program in Las Vegas luxury jets are enticing buyers with their smooth silhouettes, plush cabins - and progressively, their usage of alternative fuels.

Fuel producers and jetmakers are keen to display novel types of aviation fuel considered less hazardous to the environment, from utilized cooking oil to the definitely less glamorous meat waste.

Business jet operators, like airline companies, have actually acquiesced ecological pressure on air travel and committed to halving carbon emissions by 2050 compared to 2005.

Their hope is that adopting sustainable fuel to curb emissions could make service jets more appealing to ecologically mindful purchasers - specifically corporations facing questions over sustainability from shareholders or green project groups.

The availability 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 recent private 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 byproducts of the food industry," said Bryan Sherbacow, primary commercial officer of Boston-based biofuel manufacturer 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 screen are anticipated to be powered by 150,000 gallons of other sustainable fuel mixes expected to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of overall yearly carbon emissions internationally, but can produce, usually, as much as 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has actually safeguarded his occasional usage of personal jets to guarantee his household's safety, and has stated that on the rare celebrations he does not fly commercially he offsets his emissions.

But planemakers state events such as the furore over his itinerary have actually added fresh challenges for a market currently making every effort to validate its contribution to cutting business costs.

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

Bombardier thinks increased sustainable fuel use will help the industry make inroads with corporations and rich buyers. According to market data, billionaires only have a 19% service jet ownership rate.

But even an image remodeling - with jets sporting sticker labels like "this aircraft flies on renewable fuels" and organisers adding alternative fuel pumps for visiting aircrafts - is not likely to satisfy all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some analysts stay doubtful that biojetfuels, normally combined 50-50 with kerosene, will make a substantial effect on public understandings about high-end travel.

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

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 business and specialists are also seeing more interest from customers who desire 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 research study his business recently completed for a Fortune 500 company.

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