By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest industry show in Las Vegas luxury jets are luring buyers with their sleek silhouettes, plush cabins - and significantly, their use of alternative fuels.

Fuel manufacturers and jetmakers are keen to display novel kinds of aviation fuel deemed less hazardous to the climate, from utilized cooking oil to the definitely less glamorous meat waste.

Business jet operators, like airlines, have actually acquiesced environmental pressure on air travel and devoted to halving carbon emissions by 2050 compared to 2005.

Their hope is that embracing eco-friendly fuel to suppress emissions could make business jets more attractive to environmentally conscious purchasers - particularly corporations dealing with concerns over sustainability from investors or green campaign groups.

The availability of less contaminating private jets could also spare the abundant and famous the unfavorable publicity experienced by Britain's Prince Harry and his other half Meghan over a recent personal jet trip to France.

Five Gulfstream jets on display in Las Vegas are using 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, primary commercial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

A few of the other 79 aircraft on screen are expected to be powered by 150,000 gallons of other eco-friendly fuel blends anticipated 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, approximately 20 times more carbon emissions per guest mile than jetliners, according to the London-based private charter company Victor.

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

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

"Incidents of flight shaming involving making use of private jets are unfortunate when you think about that our industry has provided fuel performance enhancements of 40% over the previous 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image makeover - with jets sporting stickers like "this aircraft flies on eco-friendly fuels" and organisers adding alternative fuel pumps for visiting planes - is unlikely to satisfy all critics at the Oct 22-24 luxury jet occasion.

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

"No amount of jatropha curcas or Brazil-nut fuel can make business jets look eco-friendly," said air travel expert Richard Aboulafia.

Demand from service 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, could expand production as much as 150 million gallons by 2022.

Corporate charter business and experts are also seeing more interest from customers who want to purchase carbon credits to offset emissions from their flights.

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

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