By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest market program in Las Vegas high-end jets are luring purchasers with their smooth silhouettes, plush cabins - and increasingly, their use of alternative fuels.

Fuel producers and jetmakers are eager to showcase unique types of air travel fuel deemed less harmful to the climate, from utilized cooking oil to the noticeably less attractive meat waste.

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

Their hope is that embracing eco-friendly fuel to suppress emissions could make organization jets more attractive to environmentally conscious buyers - specifically corporations dealing with questions over sustainability from or green campaign groups.

The schedule of less polluting private jets might also spare the abundant and popular the unfavorable publicity experienced by Britain's Prince Harry and his other half Meghan over a current personal jet trip to southern France.

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

The most current waste-based fuels include "fats, grease and oils that are byproducts of the food market," said Bryan Sherbacow, chief industrial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our item is inedible."

Some of the other 79 airplane on display screen are expected to be powered by 150,000 gallons of other sustainable fuel mixes anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions internationally, but can emit, usually, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter company Victor.

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

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

"Incidents of flight shaming involving making use of personal jets are unfortunate when you consider that our industry has actually delivered fuel effectiveness enhancements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

Bombardier believes increased sustainable fuel use will assist the market make inroads with corporations and rich buyers. According to industry information, billionaires just have a 19% organization jet ownership rate.

But even an image makeover - with jets sporting sticker labels like "this airplane flies on eco-friendly fuels" and organisers including alternative fuel pumps for going to aircrafts - is unlikely to satisfy all critics at the Oct 22-24 high-end jet event.

Environmentalists and some experts remain hesitant that biojetfuels, usually blended 50-50 with kerosene, will make a substantial effect on public understandings about luxury travel.

"No quantity of Jatropha or Brazil-nut fuel can make service jets look eco-friendly," stated 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, might broaden production as much as 150 million gallons by 2022.

Corporate charter companies and consultants are likewise seeing more interest from consumers who wish to purchase carbon credits to balance out emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions contributed in a business jet usage study his company recently finished for a Fortune 500 business.

"At the end of the day, I think that cost, cost per hour, range, speed and efficiency, that's still the (sales) motorist. But I think people are becoming more knowledgeable about the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)