By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest market program in Las Vegas luxury jets are drawing buyers with their smooth silhouettes, plush cabins - and significantly, their use of alternative fuels.

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

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

Their hope is that embracing sustainable fuel to curb emissions might make service jets more attractive to environmentally conscious purchasers - particularly corporations dealing with questions over sustainability from shareholders or green campaign groups.

The availability of less contaminating personal jets could also spare the abundant and well-known the unfavorable publicity experienced by Britain's Prince Harry and his better half Meghan over a recent private jet trip to southern France.

Five Gulfstream jets on display 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," said Bryan Sherbacow, chief commercial officer of Boston-based biofuel manufacturer World Energy, which from meat waste utilized 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 represent less than 0.1% of overall annual carbon emissions globally, but can emit, typically, as much as 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter company Victor.

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

But planemakers state events such as the furore over his schedule have actually included fresh challenges for an industry currently making every effort to validate its contribution to cutting corporate expenses.

"Incidents of flight shaming including the use of personal jets are unfortunate when you think about that our industry has delivered fuel performance improvements of 40% over the previous 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image transformation - with jets sporting sticker labels like "this aircraft flies on renewable fuels" and organisers including alternative fuel pumps for checking out aircrafts - is not likely to please all critics at the Oct 22-24 luxury jet event.

Environmentalists and some analysts stay doubtful that biojetfuels, generally mixed 50-50 with kerosene, will make a substantial effect on public perceptions about luxury travel.

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

Demand from service jet operators for renewable fuels now far exceeds 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 approximately 150 million gallons by 2022.

Corporate charter companies and experts are likewise seeing more interest from clients who want to purchase carbon credits to offset emissions from their flights.

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

"At the end of the day, I think that cost, cost per hour, range, speed and efficiency, that's still the (sales) driver. But I think individuals are becoming more aware of the sustainability of operations and how it impacts the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)