By Allison Lampert

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

Fuel manufacturers and jetmakers are keen to showcase novel forms of air travel fuel considered less harmful to the environment, from utilized cooking oil to the definitely less attractive meat waste.

Business jet operators, like airlines, have actually acquiesced environmental pressure on air travel and committed to cutting in half carbon emissions by 2050 compared to 2005.

Their hope is that adopting eco-friendly fuel to suppress emissions could make service jets more appealing to environmentally conscious purchasers - especially corporations dealing with questions over sustainability from investors or green campaign groups.

The availability of less contaminating private jets might also spare the rich and well-known the unfavorable publicity experienced by Britain's Prince Harry and his better half Meghan over a recent personal jet journey to southern France.

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

The current waste-based fuels consist of "fats, grease and oils that are byproducts of the food industry," 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 product is inedible."

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

FLIGHT SHAMING

Private jets account for less than 0.1% of total yearly carbon emissions globally, however can release, typically, approximately 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter company Victor.

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

But planemakers say events such as the furore over his itinerary have actually added fresh obstacles for an industry currently striving to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming including the usage of private jets are regrettable when you consider that our industry has provided fuel efficiency enhancements of 40% over the previous 40 years," said Bombardier Aviation Coleal.

Bombardier believes increased sustainable fuel usage will help the market make inroads with corporations and wealthy buyers. According to market data, billionaires only have a 19% company jet ownership rate.

But even an image transformation - with jets sporting stickers like "this aircraft flies on sustainable fuels" and organisers including alternative fuel pumps for visiting airplanes - is unlikely to satisfy all critics at the Oct 22-24 luxury jet event.

Environmentalists and some analysts remain hesitant that biojetfuels, usually mixed 50-50 with kerosene, will make a significant impact on public understandings about luxury travel.

"No amount of Jatropha or Brazil-nut fuel can make organization jets look eco-friendly," said air travel analyst Richard Aboulafia.

Demand from organization 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 approximately 150 million gallons by 2022.

Corporate charter companies and experts are also seeing more interest from consumers who wish to buy carbon credits to offset emissions from their flights.

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

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