Informasi seputar Biologi, kesehatan, Gizi keluarga dan Tata Boga. Tantanglah diri kita untuk melakukan sesuatu yang selama ini kita tidak mampu melakukannya. Budayakan hidup sehat karena sehat adalah gaya hidup.
Selasa, 25 Oktober 2011
www.suaramedia.com
Budidaya Tanaman Obat, Lahan Bisnis Potensial
Senin, 30 Mei 2011 03:46
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Tanaman jahe. Pengembangan agribisnis hilir komoditas tanaman obat diarahkan untuk pengembangan produk turunan berupa produk jadi, pengembangan industri hilir temulawak, kunyit, kencur, jahe dan purwoceng yang dilakukan dengan diversifikasi produk dalam bentuk yang lebih sederhana yaitu simplisia atau ekstrak. (foto: Google)
Tanaman jahe. Pengembangan agribisnis hilir komoditas tanaman obat diarahkan untuk pengembangan produk turunan berupa produk jadi, pengembangan industri hilir temulawak, kunyit, kencur, jahe dan purwoceng yang dilakukan dengan diversifikasi produk dalam bentuk yang lebih sederhana yaitu simplisia atau ekstrak. (foto: Google)
Bibit tanaman yang mengandung obat khususnya yang ditanam di pot berprospek baik dalam bisnis tanaman hias.
"Penggemar tanaman hias kini gemar mengoleksi bibit tanaman yang mengandung obat, apalagi memasuki awal musim hujan permintaan cenderung meningkat," kata M Nazir petani dan pedagang tanaman hias asal Kabupaten Sleman, Yogyakarta.
Ia mengatakan tingginya permintaan bibit tanaman yang mengandung obat tersebut menyebabkan para pedagang tanaman hias menambah stok yang didatangkan dari berbagai daerah. "Bibit tanaman yang mengandung obat tersebut banyak dicari para penggemar tanaman hias. Mereka menilai bibit tanaman itu berkhasiat serta dapat dijadikan tanaman hias," katanya.
Menurut dia jenis tanaman yang mengandung obat itu harus didatangkan dari berbagai daerah di luar Kota Yogyakarta, karena di daerah ini sudah jarang ditemui terutama yang berkhasiat.
Mengenai prospek bisnis tanaman hias di DIY, ia mengatakan makin ramai karena banyak pemain baru, baik dari dalam maupun luar daerah, yang menekuni dan terjun ke bisnis itu. "Hampir setiap hari selalu ada penyelenggaraan pameran dan bursa tanaman hias, bahkan tidak hanya di satu tempat, tetapi di beberapa tempat secara bersamaan," kata Nasir yang memiliki sejumlah kios tanaman hias di Yogyakarta.
Hartono pedagang tanaman hias di Kabupaten Bantul mengatakan meski saat ini bisnis tanaman hias saat ini masih ramai, karena mungkin dulu mereka masih sebagai konsumen dan pembeli, namun kemudian ikut menggeluti bisnis tanaman hias.
Ia mengatakan DIY hingga saat ini masih menjadi pasar potensial untuk bisnis tanaman hias, bahkan sebagai pasar potensial Yogyakarta belum tertandingi karena hampir setiap hari ada pameran dan bursa tanaman hias.
Temulawak, kunyit, kencur dan jahe merupakan kelompok tanaman rimpang-rimpangan (Zingiberaceae) mempunyai potensi yang sangat besar untuk digunakan dalam hampir semua produk obat tradisional (jamu) karena paling banyak diklaim sebagai penyembuh berbagai penyakit masyarakat modern (degeneratif, penurunan imunitas, penurunan vitalitas). Sedangkan purwoceng sangat potensial untuk dikembangkan sebagai komplemen dan substitusi ginseng impor sehingga dapat menghemat devisa negara.
Produk yang dihasilkan dari tanaman temulawak, kunyit, kencur dan jahe adalah produk setengah jadi (simplisia, pati, minyak, ekstrak), produk industri (makanan/minuman, kosmetika, farmasi, IKOT dan IOT), produk jadi (sirup, instan, bedak, tablet dan kapsul). Sedangkan untuk purwoceng, produk setengah jadi berupa simplisia dan ekstrak, produk industri dalam bentuk jamu seduh, minuman kesehatan (IKOT/IOT), pil atau tablet/kapsul (farmasi).
Arah pengembangan tanaman obat sampai tahun 2010 masih diarahkan ke lokasi dimana industri obat tradisional berkembang yaitu di Pulau Jawa dengan target luas areal 1.276 ha untuk temulawak, 1.527 ha kunyit, 3.270 ha kencur, 7.124 ha jahe dan 154 ha purwoceng.
Target produksi sampai tahun 2010 dengan asumsi produktivitas per tahun rata-rata 7-8 ton/ha, maka produksi temulawak diperkirakan mencapai 14.020 ton, kunyit 15.426 ton, kencur 26.290 ton dan purwoceng 850 ton. Kecuali ada permintaan khusus, setelah 2010 areal pengembangan temulawak, kunyit, kencur, jahe dan purwoceng dapat diperluas ke luar Pulau Jawa yang ketersediaan lahannya lebih luas.
Pengembangan agribisnis hilir komoditas tanaman obat diarahkan untuk pengembangan produk turunan berupa produk jadi, pengembangan industri hilir temulawak, kunyit, kencur, jahe dan purwoceng yang dilakukan dengan diversifikasi produk dalam bentuk yang lebih sederhana yaitu simplisia atau ekstrak. (fn/ukm/sc) www.suaramedia.com
Source : Copyright © 2009 suaramedia.com All Rights Reserved
Sabtu, 22 Oktober 2011
http://www.hsph.harvard.edu
The Nutrition Source
Ask the Expert: Coffee and Health
the-expert (The-Expert.gif)
Dr. Rob van DamDr. Rob van Dam
Assistant Professor in the Department of Nutrition, Harvard School of Public Health
* Drinking up to six cups a day of coffee is not associated with increased risk of death from any cause, or death from cancer or cardiovascular disease.
* Some people may still want to consider avoiding coffee or switching to decaf, especially women who are pregnant, or people who have a hard time controlling their blood pressure or blood sugar.
* It's best to brew coffee with a paper filter, to remove a substance that causes increases in LDL cholesterol.
* Coffee may have potential health benefits, but more research needs to be done.
1. The latest Harvard study on coffee and health seems to offer good news for coffee drinkers. What did the research find?
We looked at the relationship between coffee consumption and overall mortality in the Nurses' Health Study and the Health Professionals Follow-Up Study, which together included about 130,000 study volunteers. (1) At the start of the study, these healthy men and women were in their 40s and 50s. We followed them for 18 to 24 years, to see who died during that period, and to track their diet and lifestyle habits, including coffee consumption. We did not find any relationship between coffee consumption and increased risk of death from any cause, death from cancer, or death from cardiovascular disease. Even people who drank up to six cups of coffee per day were at no higher risk of death. This finding fits into the research picture that has been emerging over the past few years: For the general population, the evidence suggests that coffee drinking doesn't have any serious detrimental health effects.
2. So for coffee drinkers, no news is good news? Why is this finding so important?
It's an important message because people have seen coffee drinking as an unhealthy habit, along the lines of smoking and excessive drinking, and they may make a lot of effort to reduce their coffee consumption or quit drinking it altogether, even if they really enjoy it. Our findings suggest that if you want to improve your health, it's better to focus on other lifestyle factors, such as increasing your physical activity, quitting smoking, or eating more whole grains.
3. Is there an upper limit for the amount of coffee that is healthy to drink each day?
If you're drinking so much coffee that you get tremors, have sleeping problems, or feel stressed and uncomfortable, than obviously you're drinking too much coffee. But in terms of effects on mortality or other health factors, for example, we don't see any negative effects of consuming up to six cups of coffee a day. Keep in mind that our study and in most studies of coffee, a "cup" of coffee is an 8-ounce cup with 100 mg of caffeine, not the 16 ounces you would get in a grande coffee at a Starbucks, which has about 330 mg of caffeine.
Also keep in mind that the research is typically based on coffee that's black or with a little milk or sugar, but not with the kind of high-calorie coffeehouse beverages that have become popular over the past few years. A 24-ounce mocha Frappachino at Starbucks with whipped cream has almost 500 calories—that's 25 percent of the daily calorie intake for someone who requires 2,000 calories a day. People may not realize that having a beverage like that adds so much to their energy intake, and they may not compensate adequately by eating less over the course of the day. This could lead to weight gain over time, which could in turn increase the risk of type 2 diabetes, and that's a major concern.
4. Is there any research that suggests coffee may have some beneficial health effects?
Yes, research over the past few years suggests that coffee consumption may protect against type 2 diabetes, Parkinson's disease, liver cancer, and liver cirrhosis. And our latest study on coffee and mortality found that people who regularly drank coffee actually had a somewhat lower risk of death from cardiovascular disease than those who rarely drank coffee; this result needs to be confirmed in further studies, however. This is a pretty active area of research right now, and it's not at the stage where we would say, "Start drinking coffee to increase your health even if you don't like it." But I think the evidence is good that for people in general—outside of a few populations, such as pregnant women, or people who have trouble controlling their blood pressure or blood sugar—coffee is one of the good, healthy beverage choices.
5. Why does it seem like scientists keep flip-flopping on whether coffee is bad for you or good for you?
Often people think of coffee just as a vehicle for caffeine. But it's actually a very complex beverage with hundreds and hundreds of different compounds in it. Since coffee contains so many different compounds, drinking coffee can lead to very diverse health outcomes. It can be good for some things and bad for some things, and that's not necessarily flip-flopping or inconsistent. Few foods are good for everything. That's why we do studies on very specific health effects—for example, studies of how coffee affects the risk of diabetes—but we also conduct studies such as this most recent one looking at coffee consumption and mortality over a long period of time, which better reflects the overall health effect.
Coffee is also a bit more complex to study than some other food items. Drinking coffee often goes along together with cigarette smoking, and with a lifestyle that's not very health conscious. For example, people who drink lots of coffee tend to exercise less. They are less likely to use dietary supplements, and they tend to have a less healthful diet. So in the early studies on coffee and health, it was hard to separate the effects of coffee from the effects of smoking or other lifestyle choices.
Over the several decades that coffee has been studied, there have been some reports that coffee may increase the risk of certain cancers or the risk of heart disease. But in better conducted studies, such as the one we just published—larger studies that have a lot of information about all other lifestyle factors and make a real effort to control for these lifestyle factors—we do not find many of these health effects that people were afraid of.
6. What is the latest research on the risks of coffee or caffeine during pregnancy?
For pregnant women, there has been quite a bit of controversy over whether high intake of coffee or caffeine may increase the risk of miscarriage. The jury is still out. But we know that the caffeine goes through the placenta and reaches the fetus, and that the fetus is very sensitive to caffeine; it metabolizes it very slowly. So for pregnant women it seems prudent to reduce coffee consumption to a low level, for example one cup a day.
7. Should people with high blood pressure consider reducing their coffee or caffeine intake? What about people with diabetes?
We know that if people are not used to using any caffeine, and they start to use caffeine, their blood pressure goes up substantially. Within a week of caffeine consumption, however, we see that the effect is less pronounced—there is less of an increase in blood pressure. After several weeks of continued caffeine consumption, however, a little bit of increase in blood pressure remains. In studies that look at the incidence of hypertension in the general population, drinking caffeinated coffee is not associated with a substantial increase in risk. But if people have hypertension, and are having a hard time controlling their hypertension, they could try switching from caffeinated coffee to decaffeinated coffee, to see if it has a beneficial effect.
With diabetes, it's a bit of a paradox. Studies around the world consistently show that high consumption of caffeinated or decaffeinated coffee is associated with low risk of type 2 diabetes. But if you look at acute studies that just give people caffeine or caffeinated coffee, and then have them eat something rich in glucose, their sensitivity to insulin drops and their blood glucose levels are higher than expected. There isn't any long-term data on coffee consumption and glucose control. But if people have diabetes and have trouble controlling their blood glucose, it may be beneficial for them to try switching from caffeinated to decaffeinated coffee. Making the switch from caffeinated to decaf may be better than quitting coffee altogether, because some research suggests that decaffeinated coffee actually reduces the glucose response.
8. How do you explain the paradoxical findings on coffee and caffeine consumption and diabetes?
It's possible that there are simply different effects for short-term and long-term intake of coffee and caffeine. And, as I mentioned before, it's becoming increasingly clear that coffee is much more than caffeine, and the health effects that you see for caffeinated coffee are often different than what you would expect based on its caffeine content.
For example, if you look at exercise performance, it seems that caffeine can be somewhat beneficial, but caffeinated coffee is not. Or if you look at blood pressure and compare the effects of caffeinated coffee to the effects of caffeine, you'll find that caffeinated coffee causes blood pressure increases that are substantially weaker than what one would expect for the amount of caffeine it contains. The same is true for the relationship between coffee, caffeine, and blood glucose after a meal. It's possible that there are compounds in coffee that may counteract the effect of caffeine, but more research needs to be done.
9. Is drinking coffee made with a paper filter healthier than drinking boiled coffee or other types of coffee?
Coffee contains a substance called cafestol that is a potent stimulator of LDL cholesterol levels. Cafestol is found in the oily fraction of coffee, and when you brew coffee with a paper filter, the cafestol gets left behind in the filter. Other methods of coffee preparation, such as the boiled coffee common in Scandinavian countries, French press coffee, or Turkish coffee, are much higher in cafestol. So for people who have high cholesterol levels or who want to prevent having high cholesterol levels, it is better to choose paper filtered coffee or instant coffee, since they have much lower levels of cafestol than boiled or French press coffee. Espresso is somewhere in the middle; it has less cafestol than boiled or French press coffee, but more than paper filtered coffee.
10. Do tea and coffee have similar beneficial effects?
One could expect some of the beneficial effects of coffee to be similar for tea, since some of the compounds are similar. A study in China has found that drinking large quantities of Oolong tea—a liter a day—is beneficial for glycemic control in people with diabetes. But research on tea in the U.S. has not shown the type of beneficial effect we see for coffee, probably because people in the U.S. tend to drink tea that is weaker in strength and tend to drink less of it.
References
1. Lopez-Garcia E, van Dam RM, Li TY, Rodriguez-Artalejo F, Hu FB. The Relationship of Coffee Consumption with Mortality. Ann Intern Med. 2008; 148:904-914. Summary for patients.
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Copyright © 2011 The President and Fellows of Harvard College
Rabu, 12 Oktober 2011
Jauhi Kanker Payudara dengan Jalan Kaki
KOMPAS.com — Untuk mengurangi risiko
kanker payudara, kita tak perlu sampai berolahraga ekstrem. Bahkan
dengan melangkahkan kaki saja kita sudah bisa menjaga kesehatan payudara
secara signifikan. Tidak ada kata terlambat untuk bisa merasakan
manfaatnya.
Dalam studi yang
dipublikasikan di Journal of the American Medical Association, para
ilmuwan menemukan bahwa perempuan yang rutin melakukan olahraga jalan
cepat di akhir usia 30 dan 40 tahun memiliki risiko terkena kanker
payudara lebih rendah dibanding rekan mereka yang malas bergerak.
Penelitian ini melibatkan 74.000 perempuan
menopause berusia 50-79 tahun. Mereka adalah responden dalam studi
Women's Health Initiative tahun 2002. Hasil studi tersebut antara lain
menyimpulkan manfaat terapi sulih hormon untuk mengurangi risiko kanker
payudara.
Hasil penelitian mengenai
manfaat jalan kaki ini menguatkan berbagai studi yang menyebutkan
olahraga secara teratur efektif mengurangi risiko kanker payudara. Selain itu,
ternyata tidak ada kata terlambat untuk memulainya.
Responden yang hanya berolahraga jalan
cepat 1,5-2 jam setiap minggu dan dimulai saat mereka berusia 35 dan 50
tahun juga mendapatkan manfaat penurunan risiko kanker hingga 18 persen.
Namun, tentu saja manfaatnya akan lebih bermakna bila olahraganya
dimulai sedini mungkin.
Selain
berjalan kaki, jenis olahraga lain yang bersifat fun seperti berenang
dan bersepeda, jika dilakukan secara teratur, maka akan mengurangi
risiko terkena kanker lebih besar lagi. Tak ketinggalan, ada bonus
jantung lebih sehat sekaligus menjaga agar berat badan tetap ideal.
Sumber: KOMPAS.com
Selasa, 11 Oktober 2011
5 Makanan Pencipta Efek Senang
APAKAH Anda merasa secangkir kopi di pagi hari mampu
membuat terjaga dan segar? Atau, sebatang cokelat bisa membuat hati Anda
senang? Itu bukan hanya perasaan, penelitian di Universitas Ohio
mengungkap beberapa makanan yang bisa memengaruhi suasana hati kita.
Seperti halnya alkohol dan narkoba yang memengaruhi kejiwaan, makanan juga bisa membuat kita merasa bersemangat ataupun tenang.
Peneliti Gary Wenk, dari Ohio State University and Medical Center sekaligus penulis buku bertajuk,
Your Brain on Food mengutarakan setiap makanan menstimulasi area berbeda pada otak, melepaskan berbagai zat kimia seperti dopamine dan serotonin. Di sisi lain, kekurangan asam amino bisa menyebabkan depresi.
Berikut beberapa makanan beserta cara kerja yang ujungnya akan memengaruhi suasana hati kita:
a. Cokelat
Melepaskan suatu senyawa kimia yang menimbulkan perasaan gembira disertai sedikit zat mariyuana sehingga tak mengherankan apabila banyak orang suka sekali melahap camilan yang satu ini dalam berbagai variannya.
b. Kentang
Makanan ini membuat kita merasa tenang karena melepas glukosa ke dalam darah seperti halnya efek ASI pada bayi.
c. Kacang, telur, dan susu
Makanan ini memproduksi asam amino tryptophan yang menghasilkan hormon rasa senang serotonin. Kekurangan kadar tryptophan, kita akan cenderung merasa mudah marah dan depresi.
d. Saffron, kayu manis, dan adas
Bumbu-bumbuan ini mengandung zat kimia serupa dengan mescaline. Dalam jumlah banyak, mengonsumsi bumbu ini bahkan bisa menimbulkan perasaan euforia.
e. Gula
Gula vital bagi otak dan membatu kita berkonsentrasi serta mempelajari banyak hal baru. Kekurangan gula akan membuat kita selalu lapar. (Pri/OL-06)
Seperti halnya alkohol dan narkoba yang memengaruhi kejiwaan, makanan juga bisa membuat kita merasa bersemangat ataupun tenang.
Peneliti Gary Wenk, dari Ohio State University and Medical Center sekaligus penulis buku bertajuk,
Your Brain on Food mengutarakan setiap makanan menstimulasi area berbeda pada otak, melepaskan berbagai zat kimia seperti dopamine dan serotonin. Di sisi lain, kekurangan asam amino bisa menyebabkan depresi.
Berikut beberapa makanan beserta cara kerja yang ujungnya akan memengaruhi suasana hati kita:
a. Cokelat
Melepaskan suatu senyawa kimia yang menimbulkan perasaan gembira disertai sedikit zat mariyuana sehingga tak mengherankan apabila banyak orang suka sekali melahap camilan yang satu ini dalam berbagai variannya.
b. Kentang
Makanan ini membuat kita merasa tenang karena melepas glukosa ke dalam darah seperti halnya efek ASI pada bayi.
c. Kacang, telur, dan susu
Makanan ini memproduksi asam amino tryptophan yang menghasilkan hormon rasa senang serotonin. Kekurangan kadar tryptophan, kita akan cenderung merasa mudah marah dan depresi.
d. Saffron, kayu manis, dan adas
Bumbu-bumbuan ini mengandung zat kimia serupa dengan mescaline. Dalam jumlah banyak, mengonsumsi bumbu ini bahkan bisa menimbulkan perasaan euforia.
e. Gula
Gula vital bagi otak dan membatu kita berkonsentrasi serta mempelajari banyak hal baru. Kekurangan gula akan membuat kita selalu lapar. (Pri/OL-06)
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Manfaat Buah Apel
Manfaat Buah Apel Bagi Diet Menurunkan Berat Badan
Ketika
kita lapar sebenarnya yang terjadi adalah munculnya rangsangan dari
lambung. Otak diperintahkah untuk segera mencari makanan dan mengisi
perut oleh lambung yang kosong tadi. Jika lambung telah terisi maka
secara alami kita akan merasakan rasa kenyang dan akan segera
menghentikan asupan makanan.
Manfaat buah apel: makanan yang kaya serat dan berkadar air tinggi.
Pilihlah makanan dengan kadar serat seperti buah, sayur,
sereal, gandum. Apel bersama dengan pir, jeruk adalah termasuk buah
berkadar serat tinggi. Buah dengan kadar air yang tinggi juda bisa
membuak lambung meregang. Buah melon dan semangka dengan kandungan air
nya yang tinggi meskipun berserat rendah bisa mudah membuat lambung
terisi dan mengenyangkan.
Apel ketika
dikonsumsi bersama kulitnya akan membuat kadar glukosa dalam darah
lambat naik. Apel berkulit mempunyai glicemic index yang rendah.
Kecepatan naiknya kadar gula darah dapat dikurangi dengan makanan
berkadar glicemic index yang rendah. Selain Apel berkulit tersebut,
sayur sayuran rata rata juga mempunyai kadar glicemic index yang rendah
yang ditandai dengan banyaknya serat pada daun dan batangnya.
Manfaat apel yang lain
Apel mengandung antioksidan yang tinggi, Anti oksidan ini juga
dapat membantu menurunkan kadar kolesterol jahat,
rendahnya kolesterol jahat ini akan melindungin Anda dari penyakit jantung.
Selain itu, masih banyak manfaat apel
yang dibuat jus, antara lain sebagai berikut.
- Meredakan diare
- Melancarkan pencernaan dan mengurangi berat badan
- Sari buah apel dapat menangkis serangan infeksi virus
- Membantu mengobati asma
- Mencegah kerusakan gigi dan penyakit gusi
- Memperkuat ginjal
- Menurunkan tekanan darah
- Melawan radang sendi
- Menstabilkan gula darah
- Sebagai agen antikanker
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