By Allison Lampert

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

Fuel manufacturers and jetmakers are eager to showcase unique forms of air travel fuel deemed less damaging to the environment, from used cooking oil to the clearly less attractive meat waste.

Business jet operators, like airlines, have actually bowed to ecological pressure on aviation and committed to cutting in half carbon emissions by 2050 compared with 2005.

Their hope is that adopting eco-friendly fuel to curb emissions could make service jets more appealing to ecologically mindful buyers - specifically corporations dealing with questions over sustainability from investors or green project groups.

The accessibility of less contaminating personal jets might likewise spare the rich and well-known the unfavorable publicity experienced by Britain's Prince Harry and his other half Meghan over a recent private jet trip to southern 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 industry," stated Bryan Sherbacow, primary business officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

A few of the other 79 aircraft on display screen are expected to be powered by 150,000 gallons of other sustainable fuel blends anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions internationally, but can produce, typically, as much as 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter firm Victor.

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

But planemakers say incidents such as the furore over his itinerary have actually included fresh obstacles for a market already aiming to validate its contribution to cutting business costs.

"Incidents of flight shaming including using personal jets are unfortunate when you think about that our industry has provided fuel efficiency enhancements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

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

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

Environmentalists and some experts stay doubtful that biojetfuels, normally mixed 50-50 with kerosene, will make a significant effect on public perceptions about luxury travel.

"No amount of Jatropha or Brazil-nut fuel can make company jets look eco-friendly," said aviation 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, could broaden production approximately 150 million gallons by 2022.

Corporate charter business and consultants are likewise seeing more interest from consumers who desire 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 corporate jet utilization study his company recently completed for a Fortune 500 business.

"At the end of the day, I think that price, expense per hour, variety, speed and performance, that's still the (sales) driver. But I believe individuals are becoming more knowledgeable about the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)