By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry program in Las Vegas luxury jets are enticing buyers with their sleek shapes, plush cabins - and significantly, their use of alternative fuels.

Fuel manufacturers and jetmakers are keen to display novel types of air travel fuel considered less harmful to the environment, from used cooking oil to the definitely less attractive meat waste.

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

Their hope is that embracing renewable fuel to curb emissions might make company jets more appealing to environmentally mindful purchasers - particularly corporations dealing with questions over sustainability from investors or green campaign groups.

The accessibility of less contaminating personal jets could likewise spare the rich and well-known the unfavorable publicity experienced by Britain's Prince Harry and his partner Meghan over a recent personal jet journey to southern France.

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

FLIGHT SHAMING

Private jets represent less than 0.1% of overall annual carbon emissions worldwide, but can discharge, on average, as much as 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter firm Victor.

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

But planemakers state occurrences such as the furore over his schedule have actually added fresh challenges for an industry currently striving to justify its contribution to cutting corporate costs.

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

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

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

Environmentalists and some analysts stay doubtful that biojetfuels, typically mixed 50-50 with kerosene, will make a considerable effect on public understandings about high-end travel.

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

Demand from business jet operators for eco-friendly 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 broaden production approximately 150 million gallons by 2022.

Corporate charter business and consultants are likewise 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, said emissions contributed in a corporate jet utilization study his company recently finished for a Fortune 500 business.

"At the end of the day, I believe that rate, expense per hour, range, speed and performance, that's still the (sales) chauffeur. But I think people are becoming more conscious of the sustainability of operations and how it impacts the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)