By Allison Lampert

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

Fuel manufacturers and jetmakers are keen to display novel types of aviation fuel considered less hazardous to the climate, from used cooking oil to the noticeably less glamorous meat waste.

Business jet operators, like airlines, have actually bowed to environmental pressure on air travel and dedicated to cutting in half carbon emissions by 2050 compared with 2005.

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

The availability of less polluting personal jets might likewise spare the rich and well-known the unfavorable promotion experienced by Britain's Prince Harry and his wife Meghan over a recent private jet journey 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," said Bryan Sherbacow, chief industrial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste utilized by .

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions internationally, but can emit, usually, up to 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has actually protected his periodic use of personal jets to ensure his household's safety, and has stated that on the rare celebrations he does not fly commercially he offsets his emissions.

But planemakers say events such as the furore over his travel plan have actually added fresh challenges for an industry already aiming 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 market has actually provided fuel effectiveness enhancements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image remodeling - with jets sporting sticker labels like "this aircraft flies on eco-friendly fuels" and organisers including alternative fuel pumps for visiting airplanes - is not likely to please 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 considerable effect on public understandings about luxury travel.

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

Demand from company jet operators for sustainable 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 as much as 150 million gallons by 2022.

Corporate charter companies and specialists are also seeing more interest from customers who desire to buy carbon credits to balance out emissions from their flights.

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

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