umroh oktober

Es teh atau Teh es adalah teh yang di dinginkan dengan es batu, es teh seringkali ditambahkan rasa seperti melati, dan buah-buahan seperti limun, ceri, dan arbei, atau susu. Es teh adalah minuman yang sering diminum saat siang hari karena suhu udara yang panas, di warteg, es teh sering diminum selain air dingin. Teh tarik adalah contoh dari es teh. Selain itu, beberapa merek juga menyediakan es teh, seperti Teh Botol, Frestea, dan Nu Green Tea.

Es teh sudah menjadi minuman favorit banyak orang, tak hanya di Indonesia tetapi juga banyak orang di berbagai negara. Ada beberapa keuntungan dan kerugian es teh bagi kesehatan. Apa saja?

Berbagai resep es teh berevolusi beberapa dekade untuk membuat minuman sehat. Meskipun tidak sesehat teh panas yang baru diseduh, es teh merupakan taruhan yang lebih aman dibandingkan dengan minuman soda. Es teh memberi hampir semua manfaat teh normal meski dalam jumlah yang lebih sedikit.

Berikut beberapa Manfaat dan Resiko minum es teh bagi kesehatan yaitu:


Manfaat Minum Es Teh:
1.Es teh tidak manis lebih bermanfaat daripada es teh manis. Es teh hijau akan memberikan semua manfaat dari teh hijau yang normal, selain menjadi minuman dingin menyegarkan.
2. Memilih es teh lebih aman ketimbang mengonsumsi minuman ringan bersoda.
3. Es teh mengandung beberapa antioksidan yang baik untuk tubuh kita. Antioksidan membantu mengurangi risiko stroke dan serangan jantung dan juga mengurangi kemungkinan kondisi peradangan.
4. Es teh seperti halnya teh panas, membantu dalam memerangi bau mulut dan plak.
5. Es teh telah terbukti membantu orang dengan tekanan darah tinggi, karena bertindak sebagai antibiotik.
6. Jika Anda memilih es teh hijau atau eteh oolong, maka ada lebih banyak manfaat teh dibandingkan dengan es teh hitam. Es teh seperti ini lebih baik untuk program penurunan berat badan dan untuk mencegah gigi berlubang, dibandingkan es teh biasa.


Resiko Minum Es Teh:
1. Es teh banyak mengandung oksalat, yang meningkatkan risiko batu ginjal ketika menumpuk di dalam tubuh. Jadi, terlalu banyak asupan es teh dapat meningkatkan risiko batu ginjal, jika tubuh tidak mampu memecah oksalat berlebih.
2. Es teh dalam kemasan mengandung nutrisi lebih rendah daripada es teh yang baru diseduh. Kandungan bahan aktif es teh botol juga lebih sedikit ketimbang es teh segar.
3. Es teh dalam kemasan mengandung kalori lebih banyak dari teh panas yang baru diseduh. Teh panas mengandung hampir nol kalori, sedangkan es teh kemasan mengandung antara 82-88 kalori.
4. Meskipun es teh mengandung sebagian besar manfaat yang akan Anda dapatkan dari teh panas normal, persentase dari bahan dan manfaat tersebut secara signifikan lebih rendah dibandingkan dengan teh panas.

Jadi, tidak ada perbedaan yang sangat besar antara kedua es teh dan teh panas. Anda dapat menikmati es teh di musim panas dan teh panas di musim hari dingin. Selama Anda menjaga asupan es teh dalam batasan normal dan terkendali, tidak ada efek berbahaya dari konsumsi es teh. Cobalah untuk memilih es teh tawar sebanyak mungkin.

Tips Membuat Es Teh Sehat:
1. Cobalah pilih teh hijau, dan teh putih ketika akan membuat es teh, bukan teh hitam normal. Es teh hijau dan es teh putih jauh lebih sehat daripada es teh hitam.
2. Rendam teh celup dalam air panas selama 4-5 menit untuk mendapatkan manfaat maksimum dari teh. Dengan cara demikian teh akan melepaskan semua polifenol yang berguna dan baik untuk kesehatan.
3. Es teh akan mengandung nutrisi lebih rendah daripada teh panas normal, sehingga sebaiknya minumlah es teh tawar atau tambahkan pemanis rendah kalori.

Though Robin and Joan Rolfs owned two rare talking dolls manufactured by Thomas Edison’s phonograph company in 1890, they did not dare play the wax cylinder records tucked inside each one.

The Rolfses, longtime collectors of Edison phonographs, knew that if they turned the cranks on the dolls’ backs, the steel phonograph needle might damage or destroy the grooves of the hollow, ring-shaped cylinder. And so for years, the dolls sat side by side inside a display cabinet, bearers of a message from the dawn of sound recording that nobody could hear.

In 1890, Edison’s dolls were a flop; production lasted only six weeks. Children found them difficult to operate and more scary than cuddly. The recordings inside, which featured snippets of nursery rhymes, wore out quickly.

Yet sound historians say the cylinders were the first entertainment records ever made, and the young girls hired to recite the rhymes were the world’s first recording artists.

Year after year, the Rolfses asked experts if there might be a safe way to play the recordings. Then a government laboratory developed a method to play fragile records without touching them.


The technique relies on a microscope to create images of the grooves in exquisite detail. A computer approximates — with great accuracy — the sounds that would have been created by a needle moving through those grooves.

In 2014, the technology was made available for the first time outside the laboratory.

“The fear all along is that we don’t want to damage these records. We don’t want to put a stylus on them,” said Jerry Fabris, the curator of the Thomas Edison Historical Park in West Orange, N.J. “Now we have the technology to play them safely.”

Last month, the Historical Park posted online three never-before-heard Edison doll recordings, including the two from the Rolfses’ collection. “There are probably more out there, and we’re hoping people will now get them digitized,” Mr. Fabris said.

The technology, which is known as Irene (Image, Reconstruct, Erase Noise, Etc.), was developed by the particle physicist Carl Haber and the engineer Earl Cornell at Lawrence Berkeley. Irene extracts sound from cylinder and disk records. It can also reconstruct audio from recordings so badly damaged they were deemed unplayable.

“We are now hearing sounds from history that I did not expect to hear in my lifetime,” Mr. Fabris said.

The Rolfses said they were not sure what to expect in August when they carefully packed their two Edison doll cylinders, still attached to their motors, and drove from their home in Hortonville, Wis., to the National Document Conservation Center in Andover, Mass. The center had recently acquired Irene technology.


Cylinders carry sound in a spiral groove cut by a phonograph recording needle that vibrates up and down, creating a surface made of tiny hills and valleys. In the Irene set-up, a microscope perched above the shaft takes thousands of high-resolution images of small sections of the grooves.

Stitched together, the images provide a topographic map of the cylinder’s surface, charting changes in depth as small as one five-hundredth the thickness of a human hair. Pitch, volume and timbre are all encoded in the hills and valleys and the speed at which the record is played.

At the conservation center, the preservation specialist Mason Vander Lugt attached one of the cylinders to the end of a rotating shaft. Huddled around a computer screen, the Rolfses first saw the wiggly waveform generated by Irene. Then came the digital audio. The words were at first indistinct, but as Mr. Lugt filtered out more of the noise, the rhyme became clearer.

“That was the Eureka moment,” Mr. Rolfs said.

In 1890, a girl in Edison’s laboratory had recited:

There was a little girl,

And she had a little curl


Right in the middle of her forehead.

When she was good,

She was very, very good.

But when she was bad, she was horrid.

Recently, the conservation center turned up another surprise.

In 2010, the Woody Guthrie Foundation received 18 oversize phonograph disks from an anonymous donor. No one knew if any of the dirt-stained recordings featured Guthrie, but Tiffany Colannino, then the foundation’s archivist, had stored them unplayed until she heard about Irene.

Last fall, the center extracted audio from one of the records, labeled “Jam Session 9” and emailed the digital file to Ms. Colannino.

“I was just sitting in my dining room, and the next thing I know, I’m hearing Woody,” she said. In between solo performances of “Ladies Auxiliary,” “Jesus Christ,” and “Dead or Alive,” Guthrie tells jokes, offers some back story, and makes the audience laugh. “It is quintessential Guthrie,” Ms. Colannino said.

The Rolfses’ dolls are back in the display cabinet in Wisconsin. But with audio stored on several computers, they now have a permanent voice.

Ghostly Voices From Thomas Edisonís Dolls Can Now Be Heard

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