By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest market program in Las Vegas luxury jets are luring purchasers with their smooth shapes, plush cabins - and significantly, their usage of alternative fuels.

Fuel producers and jetmakers are keen to display unique types of aviation fuel deemed less damaging to the climate, from utilized cooking oil to the definitely less glamorous meat waste.

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

Their hope is that embracing sustainable fuel to curb emissions might make service jets more attractive to ecologically conscious purchasers - particularly corporations facing concerns over sustainability from investors or green campaign groups.

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

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

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

"All of our item is inedible."

Some of the other 79 airplane on screen are anticipated 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 yearly carbon emissions internationally, however can emit, usually, approximately 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter firm Victor.

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

But planemakers state occurrences such as the furore over his travel plan have actually included fresh difficulties for a market already striving to justify its contribution to cutting business expenses.

"Incidents of flight shaming involving making use of personal jets are unfortunate when you think about that our industry has actually provided fuel performance improvements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

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

But even an image transformation - with jets sporting stickers like "this aircraft flies on renewable fuels" and organisers including alternative fuel pumps for checking out airplanes - is not likely to satisfy all critics at the Oct 22-24 luxury jet event.

Environmentalists and some analysts remain hesitant that biojetfuels, typically combined 50-50 with kerosene, will make a considerable 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 analyst Richard Aboulafia.

Demand from organization jet operators for sustainable fuels now far surpasses supply and their interest could drive future production, Sherbacow said.

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

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

Brian Proctor, CEO of Mente Group, a U.S. consultancy, stated emissions contributed in a corporate jet usage research study his company just recently completed for a Fortune 500 company.

"At the end of the day, I think that rate, expense per hour, range, speed and performance, that's still the (sales) chauffeur. But I think people 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)