By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest market show in Las Vegas luxury jets are drawing buyers with their streamlined shapes, plush cabins - and increasingly, their use of alternative fuels.

Fuel manufacturers and jetmakers are eager to showcase unique types of aviation fuel considered less harmful to the environment, from utilized cooking oil to the definitely less attractive meat waste.

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

Their hope is that adopting eco-friendly fuel to curb emissions might make company jets more attractive to environmentally conscious buyers - particularly corporations facing questions over sustainability from investors or green campaign groups.

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

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

The newest waste-based fuels include "fats, grease and oils that are byproducts of the food market," said Bryan Sherbacow, chief commercial officer of Boston-based biofuel manufacturer 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, but can give off, typically, approximately 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter company Victor.

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

But planemakers state events such as the furore over his travel plan have included fresh obstacles for a market currently aiming to justify its contribution to cutting business costs.

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

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

But even an image makeover - with jets sporting stickers like "this airplane flies on renewable fuels" and organisers adding alternative fuel pumps for going to planes - is unlikely to please all critics at the Oct 22-24 high-end jet event.

Environmentalists and some experts remain hesitant that biojetfuels, normally blended 50-50 with kerosene, will make a considerable influence on public understandings about high-end travel.

"No quantity of Jatropha or Brazil-nut fuel can make company jets look eco-friendly," said air travel expert Richard Aboulafia.

Demand from business jet operators for eco-friendly 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, could broaden production as much as 150 million gallons by 2022.

Corporate charter business and specialists are also seeing more interest from customers who wish to buy carbon credits to offset emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, stated emissions played a role in a corporate jet utilization study his business recently completed for a Fortune 500 business.

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