By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry show in Las Vegas high-end jets are tempting purchasers with their sleek silhouettes, luxurious cabins - and increasingly, their usage of alternative fuels.

Fuel manufacturers and jetmakers are eager to display novel types of aviation fuel deemed less hazardous to the environment, from utilized cooking oil to the clearly less attractive meat waste.

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

Their hope is that embracing sustainable fuel to suppress emissions might make service jets more attractive to ecologically conscious buyers - particularly corporations dealing with concerns over sustainability from investors or green campaign groups.

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

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

The current waste-based fuels include "fats, grease and oils that are by-products of the food industry," said Bryan Sherbacow, primary industrial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our product is inedible."

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

FLIGHT SHAMING

Private jets account for less than 0.1% of total annual carbon emissions internationally, however can release, typically, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter company Victor.

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

But planemakers state events such as the furore over his travel plan have added fresh difficulties for a market already striving to validate its contribution to cutting business costs.

"Incidents of flight shaming including making use of personal jets are regrettable when you consider that our industry has actually provided fuel effectiveness improvements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

Bombardier believes increased sustainable fuel use will assist the market make inroads with corporations and wealthy purchasers. According to market information, billionaires only have a 19% organization jet ownership rate.

But even an image transformation - with jets sporting stickers like "this airplane flies on renewable fuels" and organisers including alternative fuel pumps for going to aircrafts - is not likely to satisfy all critics at the Oct 22-24 luxury jet event.

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

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

Demand from service jet operators for sustainable fuels now far goes beyond supply and their interest could drive future production, Sherbacow stated.

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 want to buy carbon credits to offset emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions played a role in a business jet utilization research study his company 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) driver. But I believe individuals are becoming more knowledgeable about the sustainability of operations and how it affects the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)