By Allison Lampert

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

Fuel producers and jetmakers are eager to showcase unique forms of air travel fuel deemed less hazardous to the climate, from utilized cooking oil to the clearly less glamorous meat waste.

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

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

The schedule of less contaminating private jets might likewise spare the abundant and famous the negative promotion experienced by Britain's Prince Harry and his better half Meghan over a recent personal jet trip to southern France.

Five Gulfstream jets on screen in Las Vegas are fuel from inedible beef tallow.

The latest waste-based fuels include "fats, grease and oils that are by-products of the food market," said Bryan Sherbacow, chief industrial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"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 eco-friendly fuel mixes expected to be pumped at the program.

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions globally, but can discharge, on average, approximately 20 times more carbon emissions per guest mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has actually protected his periodic use of private jets to ensure his household's safety, and has said that on the unusual events he does not fly commercially he offsets his emissions.

But planemakers state occurrences such as the furore over his travel plan have added fresh difficulties for an industry already striving to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming involving making use of private jets are unfortunate when you consider that our market has delivered fuel performance enhancements of 40% over the past 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% service jet ownership rate.

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

Environmentalists and some analysts stay doubtful that biojetfuels, usually mixed 50-50 with kerosene, will make a significant influence on public perceptions about high-end travel.

"No quantity of jatropha curcas or Brazil-nut fuel can make service jets look eco-friendly," said air travel analyst Richard Aboulafia.

Demand from service jet operators for eco-friendly fuels now far surpasses 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 as much as 150 million gallons by 2022.

Corporate charter business and consultants are likewise seeing more interest from clients 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 business jet utilization research study his company recently finished for a Fortune 500 company.

"At the end of the day, I think that rate, cost per hour, variety, speed and performance, that's still the (sales) motorist. But I believe 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)