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How Bulgarian yogurt could help us colonise Mars

January 8, 2024
in Science
How Bulgarian yogurt could help us colonise Mars
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New Scientist Default Image

Josie Ford

Yogurt in space

“Can Bulgarian yogurt enhance astronauts’ performance during the Mars missions?” ask Izabela Shopova, Diana Bogueva, Maria Yotova and Svetla Danova in their study of that name published in the Journal of Ethnic Foods.

The researchers had seven people prepare and eat Bulgarian-style yogurt – made with Lactobacillus delbrueckiisubsp. bulgaricus and Streptococcus thermophilus. The seven were, at that time, members of “a team of analog astronauts participating in a two-week analog mission in a closed, Mars-like environment at the Mars Desert Research Station in the Utah desert, the USA”.

These stay-down-to-Earth astronauts were not, most of them, naive yogurt eaters. The study says: “Five out of the seven crew members confirmed having some sort of previous experience with yogurt.”

The experiment extends a research tradition, Bulgarian yogurt having previously been consumed on the flight of the second Bulgarian astronaut in space, and also having been fed to sailors on a 150-day voyage to Antarctica, to 56 Bulgarian Air Force pilots and to a similar number of volunteers “in simulated shipwreck conditions”.

The pre-Mars mission scientists report success: “With its long shelf life and probiotic properties, Bulgarian yogurt proves to be a valuable food item for colonizing the Red Planet.” This, they say, “underscores the versatility of Bulgarian yogurt”. They outline hopes that further research will produce insights about changes in gut microbiome diversity, as well as in “flatulence frequency”.

In the names of science

Considered all together, the scientific names of living critters are a miscellany of hodgepodges. Richard Wakeford alerts Feedback to an attempt, published in the Proceedings of the Royal Society B, to savour the variety.

In their paper “Naming the menagerie: Creativity, culture and consequences in the formation of scientific names“, Stephen B. Heard at the University of New Brunswick, and Julia J. Mlynarek at the Montreal Insectarium, both in Canada, sketch the manyness – and rue its difficulties.

Their appreciation goes to great lengths. They write: “Might species with names that are long and difficult to spell or pronounce find themselves understudied? One of us (SBH) has published repeatedly on the gallmaking moth Gnorimoschema gallaesolidaginis and hopes one day to type it correctly on the first try; the newly described myxobacterium Myxococcus llanfairpwllgwyngyllg-ogerychwyrndrobwllllantysiliogog-ogochensis offers a next-level challenge.”

Sikkens, from the nose

Healthcare workers (HCW), consider yourself warned. “Nose picking among HCW is associated with an increased risk of contracting a SARS-CoV-2 infection,” says a study called “Why not to pick your nose: Association between nose picking and SARS-CoV-2 incidence, a cohort study in hospital health care workers” in the journal PLoS One. It was written by Jonne J. Sikkens and five colleagues at Vrije University Amsterdam in the Netherlands. (Sikkens, Feedback notes, is obviously another name in the long annals of nominative determinism.)

Healthcare workers, please also consider, if only a little, the emotional side of nose picking.

Chittaranjan Andrade and B. S. Srihari at the National Institute of Mental Health and Neurosciences in Bengaluru, India, were awarded the 2001 Ig Nobel public health prize for their discovery that nose picking is a common – and emotionally healthy – activity among teens. They documented their gleanings in a paper called “A preliminary survey of rhinotillexomania in an adolescent sample“, published in the Journal of Clinical Psychiatry.

Thus the covid-19 pandemic has added risk and worry to yet another small, otherwise-comforting (bar the disgust aspect) bit of daily life.

Penetrating question

Can light penetrate through pomelos and carry information?

The question is addressed in a study called “Can light penetrate through pomelos and carry information for the non-destructive prediction of soluble solid content using Vis-NIRS?” Hao Tian and colleagues at Zhejiang University, China, published it in the journal Biosystems Engineering.

Pomelos are ancestors of grapefruits. The latter is thought to be the love child of a long-ago romance between a pomelo and an orange. “Vis-NIRS” is a sibilant abbreviation for the phrase “visible near-infrared spectroscopy”. “Soluble solid content” is the English-language phrase that some people mean when they use the slangy utterance “SSC”.

The study concludes that yes, “light can penetrate through pomelos and carry information for the non-destructive prediction of SSC using Vis-NIRS”.

This accords with grapefruit family tradition. Word arrived in 2017, in a study by Khayelihle Ncama at the University of KwaZulu-Natal, South Africa, and his colleagues, that light can penetrate through both grapefruits and oranges and can carry information. Deliciously useful information: “[Our] results demonstrated the ability of Vis/NIRS to non-destructively predict sweetness and flavour attributes of oranges and grapefruit.”

Marc Abrahams created the Ig Nobel Prize ceremony and co-founded the magazine Annals of Improbable Research. Earlier, he worked on unusual ways to use computers. His website is improbable.com.

Got a story for Feedback?

You can send stories to Feedback by email at [email protected]. Please include your home address. This week’s and past Feedbacks can be seen on our website.

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