By Allison Lampert

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

Fuel manufacturers and jetmakers are eager to display unique types of aviation fuel deemed less harmful to the climate, from utilized cooking oil to the noticeably less attractive meat waste.

Business jet operators, like airline companies, have actually acquiesced ecological pressure on air travel and devoted to halving carbon emissions by 2050 compared to 2005.

Their hope is that adopting renewable fuel to suppress emissions could make service jets more appealing to ecologically mindful purchasers - especially corporations facing concerns over sustainability from investors or green campaign groups.

The availability of less polluting personal jets could also spare the abundant and famous the unfavorable publicity experienced by Britain's Prince Harry and his other half Meghan over a current private jet trip to southern France.

Five Gulfstream jets on screen in Las Vegas are utilizing 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," stated Bryan Sherbacow, primary of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions worldwide, but can release, typically, approximately 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter company Victor.

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

But planemakers state incidents such as the furore over his travel plan have actually included fresh challenges for a market already making every effort to justify its contribution to cutting corporate costs.

"Incidents of flight shaming including making use of personal jets are unfortunate when you consider that our market has actually delivered fuel efficiency enhancements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

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

But even an image makeover - with jets sporting sticker labels like "this aircraft flies on sustainable fuels" and organisers adding alternative fuel pumps for visiting planes - is unlikely to satisfy all critics at the Oct 22-24 luxury jet event.

Environmentalists and some experts stay skeptical that biojetfuels, normally combined 50-50 with kerosene, will make a considerable effect on public perceptions about luxury travel.

"No quantity of jatropha curcas or Brazil-nut fuel can make business jets look eco-friendly," stated aviation expert 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, might broaden production up to 150 million gallons by 2022.

Corporate charter business and experts are likewise seeing more interest from clients who wish to buy carbon credits to balance out emissions from their flights.

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

"At the end of the day, I believe that cost, 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)