By Allison Lampert

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

Fuel producers and jetmakers are keen to display novel types of aviation fuel deemed less damaging to the environment, from used cooking oil to the distinctly less glamorous meat waste.

Business jet operators, like airlines, have acquiesced environmental pressure on aviation and devoted to halving carbon emissions by 2050 to 2005.

Their hope is that embracing eco-friendly fuel to curb emissions could make company jets more attractive to ecologically conscious purchasers - particularly corporations facing questions over sustainability from investors or green project groups.

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

Five Gulfstream jets on screen 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 market," 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 product is inedible."

A few of the other 79 aircraft on screen are anticipated to be powered by 150,000 gallons of other eco-friendly fuel mixes expected to be pumped at the show.

FLIGHT SHAMING

Private jets account for less than 0.1% of overall yearly carbon emissions globally, however can release, usually, approximately 20 times more carbon emissions per passenger mile than jetliners, according to the London-based private charter firm Victor.

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

But planemakers say events such as the furore over his travel plan have added fresh obstacles for a market already striving to justify its contribution to cutting corporate costs.

"Incidents of flight shaming including making use of personal jets are regrettable when you think about that our market has actually delivered fuel effectiveness enhancements 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 rich buyers. According to market information, billionaires just have a 19% company 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 going to aircrafts - is unlikely to satisfy all critics at the Oct 22-24 high-end jet event.

Environmentalists and some analysts remain skeptical that biojetfuels, typically mixed 50-50 with kerosene, will make a considerable influence on public understandings about luxury travel.

"No quantity of Jatropha or Brazil-nut fuel can make organization jets look eco-friendly," stated aviation expert Richard Aboulafia.

Demand from service jet operators for eco-friendly 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 broaden production up to 150 million gallons by 2022.

Corporate charter business and experts are likewise seeing more interest from customers who wish to purchase 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 research study his business just recently finished for a Fortune 500 company.

"At the end of the day, I think that rate, expense per hour, variety, speed and efficiency, that's still the (sales) chauffeur. But I think people 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)