新埔捷運站1號出口 旁邊7-11巷子進入20公尺 看到夏朵美髮左轉
烤肉 與健康?
Is BBQ Food Good for You or Bad for Your Health? functionaldoctornj
Meat contains creatine, an organic acid that helps to supply the energy used by muscle cells. When you cook meat, a chemical reaction turns creatine into a group of compounds called heterocyclic amines (HCAs) and there is some evidence that these compounds cause cancer in high concentrations.
Barbecues tend to be hotter than other cooking methods, and if you cook everything until it is well done and charred, the level of HCAs is much higher.
A barbecue also heats the meat from below. As the fat drips onto the hot coals it burns, and the smoke rises up and coats the meat. This smoke contains lots of polycyclic aromatic hydrocarbons (PAHs) from the partially burned fat. PAHs are another group of chemicals that are known to cause cancer.
Most of the studies linking HCAs and PAHs to cancer have been in labs, using rats and very high doses. Most people don’t eat barbecue food often enough for the health risk to be measurable, even if you spend every Saturday afternoon in the sunshine drinking beer and eating burgers.
If you are worried, use a marinade!
A 2008 study found that spicy marinades can decrease HCA formation, so don’t be afraid to sprinkle on the red pepper.
Certain spices are packed with antioxidants that will help to eliminate HCAs in the grilling process. One study showed that adding spices, such as thyme, sage, and garlic, can reduce the amount of total HCAs by 60% compared to the control.
Rosemary may be especially potent. A recent study found that high concentrations of rosemary extracts may reduce HCAs by up to 90% in some cases.
Red wine is full of antioxidants, and this can carry over in your marinades. Marinating beef in red wine for six hours before grilling decreased the amount of carcinogens—40% fewer than in beef that wasn’t marinated—according to a study by the University of Porto in Portugal.
Using beer has been found to provide similar positive effects. According to research published by the Journal of Agricultural and Food Chemistry, soaking meat in a marinade of beer – especially stout or black beer – reduces the creation of PAHs when it’s grilled by around 50%.
Grill veggies instead
Unlike meat, vegetables don’t create carcinogens when they char as the formation of HCAs depends on the presence of creatine, which is mostly found in muscle tissue. The lack of fat also means there are no flare-ups that can create smoke.
Grilled veggies offer that same hot-off-the-grill taste without the dangers presented by their meaty counterparts. However, if you crave grilled meat, make kebabs. Using half meat, half veggies is healthier and cuts down on the HCAs. The “meat on a stick” concept works great for cuts of beef, chicken, pork, and sausage or any meat that’s not ground. Skewer fruits and veggies like summer squash, zucchini, mushrooms, brussel sprouts, pineapple, either with meat or solo.
How to have a healthier barbecue
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Archaeologists Find Mysterious 'Elixir of Immortality' in Ancient
Chinese Tomb
Peter Dockrill
Researchers in China have identified a mysterious liquid contained in an ancient bronze pot from thousands of years ago, and it turns out to be a famous potion fabled in Chinese legend.
According to the archaeologists, the strange yellowish liquid uncovered during excavations in central China's Henan Province late last year is an ancient 'elixir of immortality', once thought in centuries past to bestow immortal life upon those who drank it.
"It is the first time that mythical 'immortality medicines' have been found in China," Shi Jiazhen, the head of the Institute of Cultural Relics and Archaeology, told Xinhua this week.
"The liquid is of significant value for the study of ancient Chinese thoughts on achieving immortality and the evolution of Chinese civilisation."
017 elixir of immortality ancient china 1(Institute of Cultural Relics and Archaeology)
The bronze pot was unearthed from a sprawling 210 square-metre (2,260 sq ft) tomb, dating back to the Western Han Dynasty (202 BCE to 8 CE) in the city of Luoyang.
It lay among a haul comprising a number of ancient artefacts, including painted clay pots and a goose-shaped lamp – not to mention the preserved remains of the tomb's occupant.
But it was the mysterious liquid – still held in the bronze pot after some 2,000 undisturbed years – that captured the researchers' imaginations, giving off an aroma of rich wine, which led the team to initially suspect they'd found liquor.
"There are 3.5 litres of the liquid in the colour of transparent yellow," Shi said in November last year. "It smells like wine."
At the time, the archaeologists poured the liquid out of the bronze pot into a measuring glass, and noted that further analysis in the lab would be required to identify just what kind of ancient alcohol this was, with the team indicating liquor made from rice and sorghum grains had previously been discovered in similar finds.
But it wasn't rice wine after all, the results show, with the archaeologists reporting that the mysterious liquid is a mixture of potassium nitrate and alunite.
In more recent times, potassium nitrate has been employed in everything from fireworks to fertiliser and food thickener – but its combination here with alunite is a match for the ingredients for an 'elixir of life', the researchers say, as documented in ancient Taoist texts.
Elixirs supposedly bestowing immortality or preternatural longevity were a feature of many long-ago cultures, and in the case of ancient China, were composed of all kinds of unusual ingredients you wouldn't usually consume, including gold, jade, mercury, arsenic, and lots of other indigestible or poisonous minerals.
In fact, the high level of risk associated with drinking these magical potions was so notorious, that an entire body of research is dedicated to the history of Chinese alchemical elixir poisoning, and depending on level of exposure, potassium nitrate ingestion can be fatal.
That said, we don't know whether this ancient elixir of the Western Han Dynasty was ever actually imbibed – or simply placed in the tomb as a ritual burial object to honour the departed, as Gizmodo points out.
But given what sometimes went into these drinks, abstinence was probably the only true secret to living a long, prosperous life. You have chosen… wisely.
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