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Cómo el aerosol de melaza podría terminar con el mal aliento en perros, según un estudio
Un espray fabricado a partir de melaza, el jarabe oscuro y espeso que queda como residuo del proceso de refinamiento de la caña de azúcar, consiguió reducir el mal aliento y las bacterias dañinas en la boca de perros domésticos.
Se trata de un aerosol desarrollado por científicos de China, quienes publicaron los resultados en Journal of Agricultural and Food Chemistry de los Estados Unidos.
El producto, elaborado con polifenoles —compuestos naturales con propiedades antibacterianas presentes en muchas plantas— demostró resultados tanto inmediatos como sostenidos tras un mes de uso diario en animales con halitosis, el término científico para el mal aliento.
Los investigadores a cargo del estudio fueron Hongye Li, Yin Fei y Wei Zhao, de la Universidad de Jiangnan, en China, con financiamiento del Programa Nacional de Investigación y Desarrollo de China.
El olor en la boca de los perros no es solo una molestia para las personas que están cerca: puede ser señal de enfermedad oral. Las clínicas veterinarias suelen tratar este problema con cepillado diario, antibióticos o enjuagues químicos, opciones que no siempre resultan fáciles de aplicar en casa.
El equipo de Li buscó una alternativa más accesible y sostenible, con origen en un subproducto agrícola de bajo costo y amplia disponibilidad. “Nuestro objetivo fue investigar si un subproducto agrícola sostenible podía mejorar de forma segura la salud oral diaria”, dijo Li en un comunicado oficial de la Sociedad Estadounidense de Química.
El equipo reclutó 10 perros domésticos sanos con mal aliento, con el consentimiento previo de sus tutores, y les aplicó el espray con polifenoles extraídos de la melaza directamente en la boca. Una hora después, evaluadores entrenados no detectaron olor desagradable en ninguno de los animales.
El análisis de las muestras de saliva mediante cromatografía de gases–espectrometría de masas —una técnica que identifica y mide sustancias químicas presentes en una muestra— confirmó que compuestos como ésteres, aminas y aldehídos, todos responsables del mal olor, habían desaparecido o quedado en niveles indetectables.
“El espray tiene un olor suave, similar al de las plantas y a la melaza, pero no es fuerte ni desagradable”, dijo Li.
Para evaluar el efecto a largo plazo, los perros recibieron el espray a diario durante 30 días. Al cabo de ese período, su saliva presentó niveles más bajos de aldehídos y ésteres de ácidos grasos de cadena corta, sustancias producidas por bacterias patógenas que generan olores grasos.
El microbioma oral —la comunidad de microorganismos que vive en la boca— también mostró cambios: las proporciones de bacterias asociadas al mal aliento, como Porphyromonas y Fusobacterium, bajaron de forma notable tras el tratamiento.
Experimentos adicionales en laboratorio y simulaciones computacionales permitieron al equipo describir con mayor precisión cómo actúan los polifenoles.
“Primero, los polifenoles actúan como una ‘esponja molecular’, y se unen directamente a las moléculas de mal olor existentes para neutralizarlas. Segundo, actúan como un ‘interruptor’ para apagar enzimas bacterianas específicas que producen olores desagradables. Finalmente, trabajan como un ‘jardinero’ para eliminar con el tiempo las poblaciones de bacterias causantes del mal olor”, afirmó.
Los investigadores señalaron que el método es múltiple, sostenible y seguro, y que su aplicación puede mejorar la convivencia entre los perros y sus familias. El tamaño de la muestra —10 perros— indica que se trata de una investigación preliminar.
El equipo tiene previsto ampliar las pruebas con más animales para confirmar y extender los resultados obtenidos.
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DOJ warns former red state is becoming the next California as governor embraces ICE limits
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The Department of Justice (DOJ) is warning that Virginia risks becoming «the next California» in the Trump administration’s fight against resistance to federal immigration enforcement after filing a new lawsuit last week.
«We are suing Virginia to prevent Virginia from becoming the next sanctuary jurisdiction, just like California,» DOJ Assistant Attorney General for the Civil Division Brett Shumate told Fox News Digital in a Zoom interview.
The lawsuit, first shared with Fox News Digital earlier in June, argues Virginia is violating the Constitution by trying to regulate federal law enforcement operations, including restrictions on agents’ masks, identification requirements and conditions on local cooperation with ICE.
«Under our Constitution, the states do not get to regulate or dictate how the federal government performs its duties, and that is especially the case when it comes to law enforcement. Virginia passed two bills in this newest session, one that restricts the ability of law enforcement officers to wear facial coverings and requires officers, federal agents, to wear identification badges,» said Shumate.
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Acting Attorney General Todd Blanche testified during a Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing at the Dirksen Senate Office Building on May 19, 2026, in Washington, D.C. (Nathan Posner/Anadolu via Getty Images)
He said the other bill «restricts cooperation agreements between local law enforcement agencies, like sheriffs, and ICE to voluntarily cooperate with federal immigration enforcement.»
The lawsuit names Virginia Attorney General Jay Jones and left-wing Fairfax County Commonwealth Attorney Steve Descano — who was previously backed by groups connected to George Soros.
While DOJ has not heard back from state officials, Shumate shared that the department feels confident about the previous case due to precedent.
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A redistricting failure is another headache for newly-elected Virginia Gov. Abigail Spanberger. (Graeme Sloan/Bloomberg/Getty Images)
«We brought a nearly identical lawsuit against California earlier this year, and we won that case,» he said.
In April, a federal appeals court handed the Trump administration a legal victory over Democratic Gov. Gavin Newsom. The court blocked California from requiring federal immigration agents to display identification during operations.
He says they are asserting the same legal theory in this case.
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Anti-ICE agitators attempted to block vehicles from leaving the Delaney Hall detention facility in Newark, New Jersey, on Friday night. (FreedomNewsTV)
«Under the Constitution, the Supremacy Clause in particular, the states do not get to regulate or discriminate against the federal government,» said Shumate. «That’s exactly what Virginia has done. They have attempted to regulate how the federal goes about its business. They do not have the authority to do that under the constitution.»
The two Virginia laws are set to take effect July 1 and Shumate shared the DOJ plans to move quickly to a district court judge to enjoin these laws from taking effect. Virginia was previously a solidly red state, voting for Republicans in nearly every presidential election for decades before shifting to the left in the last roughly 20 years.
«We will be filing very quickly in the district Court in Virginia to seek an injunction to stop these laws from taking effect, which these laws have criminal penalties that put federal agents at risk, not only of criminal prosecution, but also at risk of doxing and harassment,» he added.
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ICE has defended the practice of agents concealing their identities during operations, saying last summer as Trump’s intensifying immigration crackdown prompted anti-ICE protests and riots that rhetoric on the left had caused a spike in «threats and assaults against [agents’] families.»
Shumate shared the department is looking at several bills in other states that are considering mask restrictions.
«Any state that’s considering passing this type of bill is on notice that we will file a lawsuit and we will ask for an injunction to block those laws from taking effect,» said Shumate.
virginia, justice department, immigration, california, sanctuary cities
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British Prime Minister Keir Starmer faces potential leadership challenge from newly-elected Andy Burnham
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Andy Burnham has officially won his special election and regained a seat in Parliament, setting him up to challenge the deeply unpopular Keir Starmer as the leader of the Labour party and as prime minister.
Burnham, currently the mayor of Greater Manchester in northwest England, won a seat in Makerfield and came away with 55% of the vote in a field of more than a dozen candidates, according to The Associated Press. The runner-up was Rob Kenyon of Reform UK, a right-wing populist party, who received more than 9,000 fewer votes than Burnham.
Burnham last served as a member of Parliament in 2017 but strongly implied in his victory speech that he is returning with the intention to lead the United Kingdom.
«Everyone knows that politics isn’t working. Everyone can feel that the country isn’t where it should be. Tonight could, just could, be the turning point,» he said, according to the AP. «This result will bring about a country that works fairly for everywhere and for everybody.»
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Britain’s Labour party candidate Andy Burnham speaks to supporters after the Makerfield by-election in Ashton in Makerfield, England, on Friday, June 19, 2026. (Jon Super/AP)
This special election, called by-elections in Britain, was unusually significant because the area’s Labour MP, Josh Simons, intentionally resigned to allow Burnham to win the seat and pursue leadership.
The potentially outsized impact of this election was juxtaposed with the strange scene that unfolded when all the candidates gathered on Friday morning to hear the results. Burnham stood in between an independent candidate dressed in a fox costume and another candidate known as «Count Binface».
As his name suggests, «Count Binface,» whose real name is Jonathan David Harvey, was wearing a trash can on his head and regularly runs in U.K. elections to advocate for increased voter turnout.
Starmer congratulated Burnham in a social media post on X, saying voters «chose Labour’s campaign of hope and optimism over division and hate.»
When asked about Burnham’s intentions to oust him as leader, Starmer said he will fight to remain prime minister, a position he has held for nearly two years.
«I’ve said repeatedly I’m not going to walk away from that,» Starmer told reporters.
Labour party candidate Andy Burnham, center, stands with other candidates on the podium at the Edge Wigan, awaiting the Makerfield by-election result announcement in Wigan, England, on Friday, June 19, 2026. (Jon Super/AP)
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Starmer led the Labour party to a landslide victory in July 2024 and ever since, his popularity has been eroding thanks to a persistently high cost of living, an anemic economy and a scandal over his willingness to accept gifts from wealthy donors.
Last September, Starmer was slammed for appointing Peter Mandelson as the British ambassador to the United States, when it was known as early as 2019 that Mandelson had a friendship with convicted child sex offender Jeffrey Epstein. Following an enormous public backlash, Mandelson was quickly dismissed from his post.
With Starmer as leader, Labour is increasingly losing liberal-minded voters to the Green Party, while also facing stronger challenges by Reform UK, a Nigel Farage-led party that advocates against mass migration and in favor of tighter border controls. Farage, an ally of U.S. President Donald Trump, said he was disappointed by Burnham’s victory.
Burnham is expected to head to London to be sworn in as soon as Monday. Under the British parliamentary system, the governing party can hold leadership elections in the middle of the term. The winner of such a contest can become prime minister without there having to be a national election.
British Prime Minister Keir Starmer awaits Switzerland’s Federal President Guy Parmelin on the sidelines of the G7 summit, in Evian-les-Bains, France, on Tuesday, June 16, 2026 (Isabel Infantes/Pool Reuters via AP)
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Under Labour rules, a lawmaker can challenge the leader if they win the backing of a fifth of their party’s members in the House of Commons. Burnham has enough lawmakers on board to trigger a leadership contest, according to a report from The New Statesman.
According to the AP, Culture Secretary Lisa Nandy said Burnham and Starmer will «have a conversation about what comes next» in the next few days.
The Associated Press contributed to this report.
united kingdom, elections, politics
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