By Allison Lampert

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

Fuel producers and jetmakers are eager to display unique types of aviation fuel deemed less harmful to the environment, from utilized cooking oil to the distinctly less attractive meat waste.

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

Their hope is that adopting eco-friendly fuel to curb emissions could make business jets more appealing to environmentally conscious purchasers - especially corporations dealing with concerns over sustainability from investors or green project groups.

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

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

The latest waste-based fuels include "fats, grease and oils that are byproducts of the food industry," stated Bryan Sherbacow, chief industrial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

Some of the other 79 aircraft on screen are anticipated to be powered by 150,000 gallons of other renewable fuel mixes expected to be pumped at the program.

FLIGHT SHAMING

Private jets account for less than 0.1% of total annual carbon emissions globally, but can discharge, typically, approximately 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has actually safeguarded his periodic usage of personal jets to guarantee his family's security, and has stated that on the rare events he does not fly commercially he offsets his emissions.

But planemakers state incidents such as the furore over his travel plan have added fresh difficulties for an industry currently striving to validate its contribution to cutting business expenses.

"Incidents of flight shaming involving the usage of private jets are regrettable when you think about that our market has actually provided fuel efficiency improvements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

Bombardier believes sustainable fuel usage will assist the industry make inroads with corporations and rich purchasers. According to industry data, billionaires only 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 visiting planes - is not likely to satisfy all critics at the Oct 22-24 high-end jet event.

Environmentalists and some analysts stay hesitant that biojetfuels, usually combined 50-50 with kerosene, will make a substantial influence on public perceptions 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 business jet operators for renewable fuels now far exceeds supply and their interest could drive future production, Sherbacow said.

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

Corporate charter companies and specialists are also seeing more interest from customers who desire 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 utilization study his company just recently finished for a Fortune 500 company.

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