By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market show in Las Vegas luxury jets are luring buyers with their streamlined shapes, luxurious cabins - and progressively, their usage of alternative fuels.

Fuel manufacturers and jetmakers are eager to display unique kinds of air travel fuel considered less damaging to the environment, from used cooking oil to the distinctly less attractive meat waste.

Business jet operators, like airline companies, have actually bowed to environmental pressure on air travel and devoted to halving carbon emissions by 2050 compared with 2005.

Their hope is that embracing sustainable fuel to curb emissions could make company jets more attractive to environmentally mindful buyers - particularly corporations facing concerns over sustainability from shareholders or green project groups.

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

Five Gulfstream jets on display 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, chief business officer of 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 display screen are anticipated to be powered by 150,000 gallons of other eco-friendly fuel blends expected to be pumped at the program.

FLIGHT SHAMING

Private jets account for less than 0.1% of total annual carbon emissions worldwide, however can produce, usually, as much as 20 times more carbon emissions per guest mile than jetliners, according to the London-based private charter company Victor.

Prince Harry has actually defended his occasional usage of private jets to guarantee his family's safety, and has actually said that on the uncommon events he does not fly commercially he offsets his emissions.

But planemakers state events such as the furore over his itinerary have actually added fresh obstacles for an industry already making every effort to validate its contribution to cutting business costs.

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

Bombardier thinks increased sustainable fuel usage will assist the market make inroads with corporations and wealthy purchasers. According to industry data, billionaires just have a 19% company jet ownership rate.

But even an image transformation - with jets sporting sticker labels like "this aircraft flies on eco-friendly fuels" and organisers adding alternative fuel pumps for checking out planes - is not likely to satisfy all critics at the Oct 22-24 luxury jet occasion.

Environmentalists and some analysts stay skeptical that biojetfuels, generally combined 50-50 with kerosene, will make a considerable influence on public understandings about high-end travel.

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

Demand from company jet operators for renewable fuels now far exceeds supply and their interest might drive future production, Sherbacow said.

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

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

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

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