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California
Olive Oil
News© |
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Volume 8 Issue 8 |
August 2005 |
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| Mission Olive Preservation Project | Events | ||||||||
| Olive Waste Adds Antioxidants to Bread | Briefs | ||||||||
| Comments from the Internet | |||||||||
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In 1998, Gabrielle Leonhard of the Mission Olive Preservation,
Restoration, and Education Project (MOPREP) visited Nuestra Senora
de la Soledad in the Salinas Valley. Gabrielle recalls, “The wind
was blowing, dirt filled the air, a door was slamming open and shut,
a dog barked in the far distance; yet the silence and emptiness were
immense.” Soledad is solitude in Spanish; Our Lady of Solitude
Mission, a name appropriately chosen by the Franciscan padres who
established the Mission in 1791. Salinas Valley is wide with
mountain ranges on both sides and the Salinas River running through
it. In the foothills, approximately ten miles away from the mission,
are the Pairaso Springs, where ancient mission grape vines have been
found. This is probably the original location of the olive orchard,
although no ancient trees are left. Historians know olive oil was
produced at Mission Nuestra Senora de la Soledad, for a piece of the
original press has been excavated from the center courtyard.
MOPREP Community volunteer Bob Bianchi at the
2004 olive harvest
Since Mission Soledad’s first harvest in 2000, olive oil
production has continually increased each year. 2005’s harvest, the
largest yield to date, resulted in thirty-five gallons of extra
virgin to the diocese for this year’s Chrism mass. “No other
Mission, nor diocese, is producing their own olive oil for the
Chrism. I am very proud of Mission Soledad’s accomplishment and
contribution to our community,” said Bishop Ryan.
MOPREP is a volunteer effort in collaboration with many of
California’s olive oil producers, the California Mission staffs and
volunteers, and the local communities, funded by private donations
and MOPREP fundraising, to preserve California’s cultural link to
the olive tree. Volunteers coordinate horticultural care,
replanting, and olive harvests for oil making, at any of the
twenty-one California Missions that request their assistance. Olive Waste Component Adds Antioxidants to Bread Food Production Daily reports that a new bread containing an antioxidant found in olives has been launched in Spain. The bread contains concentrated hydroxytyrosol, one of the main antioxidants found in olives. The product is touted as an anti-ageing and heart healthy food. Hydroxytyrosol is a valuable but troublesome byproduct of olive oil milling. Unfortunately, it and most of the other antioxidants in olives end up in the olive water, not the oil. They prevent oxidation but also kill bacteria in any kind of attempt to ferment or biologically treat the waste. Many city waste treatment plants refuse to accept olive waste for this reason, creating problems for olive mill operators. There has been interest for years in finding a way to profitably extract the polyphenol antioxidants, making the disposal of the olive waste easier and creating a valuable food additive at the same time. Genosa R&D is the supplier of the ingredient in Spain with the trade name of Hytolive 2. They have patented a process for extracting the hydroxytyrosol from waste from olive mills. Puraots, a supplier of bakery ingredients, is distributing the product and has added it to their Nostrum brand bread which is already on the market in Spain. In the United States, Dr. Roberto Crea at Supremo has been working on similar technology. His company, CreAgri, has marketed the antioxidants and other byproducts removed from olive waste to the cosmetic, nutritional and pharmaceutical industry. Their dietary supplement containing hydroxytyrosol called Olivenol has been available for some years now. Dr. Crea claims that it contains the natural olive polyphenol with the highest level of free radical protection activity ever reported for any natural antioxidant compound. Similar products have appeared on the market from other vendors. They often claim to prevent atherosclerosis, cancer , solar skin damage and damage to the body from smoking. Their ability to kill bacteria in a test tube has been used as a claim that they are antibacterial when consumed, something which has not been conclusively proved in rigorous scientific studies.
Polyphenol antioxidants are suspected to be one of the important
components of the "Mediterranean diet" which is rich in fruits,
vegetables and olive oil. Hopefully this and similar
technology will prove to be a health boon and solve an environmental
waste disposal problem at the same time. Website Changes and Additions at The Olive Oil Source: Advertising
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Mail from the Internet: Joel Asks: Need something on " methods of irrigation ". Am buying five acres with lots of olive trees in Morocco . There is no irrigation system but a good well . Who sells irrigation equipment, need some sort of piping -spraying system I presume . Pumps ? . What is the best soup to nuts book on growing olives . Olive Oil News:
We have no recommendations for irrigation
suppliers in Morocco but can suggest several good books on
olive cultivation. Check out the newest editions of
Pruning
and Training Systems for Modern Olive Growing
There may be local university or
agricultural officers in Morocco who would be able to help you
also
Bruce
Asks:
Is there any simple test I can do to determine if oil is extra virgin? I
heard that it clouds when chilled. Any ideas? Olive Oil
News responds: Unfortunately, there is no simple chemical
test for extra virgin oil. The taste buds of a certified taster is
probably the quickest way to tell if an oil has a defect which would
disqualify it from being considered extra virgin. But even the best
tasters cannot detect adulteration with cheaper hazelnut oil or
additions of lower grades of refined olive oil. Your best bet in
the US is to look for a
dated COOC seal of approval or buy oil which passes IOOC certification. For a discussion of clouding, see
the
newletter article from last December Matthew
Asks:
I just wondered which is the best way to plant an actual olive. I've
gathered together a few small olives, picked direct from a tree in Italy
last week. Olive Oil
News responds: As olives are rarely grown from seeds, you are
not going to find much in the way of information on this one. Most trees
are grown from rooted cuttings off an existing tree. Growing an olive from fresh olives
is usually a frustrating experience as very few germinate but a tree
dropping thousands of olives over hundreds of years will produce many
seedlings as most tree owners will attest. Olives do not need to
pass through the intestine of some exotic animal before sprouting like
some peculiar species. The olive must have ripened to a black color
on the tree to sprout, and of course can't have been pickled or salted in
any way. Click
for a full discussion on propagating by other methods Janet Asks: What is
the chemical or component in the olive oil that is peppery and sometimes
makes people cough? Is it oleic acid? But it really doesn't burn tissue,
does it?
Dr. Deane Answers:
Good question, It is not oleic acid because all olive oils have about the
same amount and they are not all peppery. Many studies have been done to
try to predict a flavor profile based on an oil's chemistry. In "The
Handbook of Olive Oil" by Harwood and Arapicio they cite studies done by
the authors which show that aglycons are responsible for the bitter and
pungent sensory attribute, as well as tyrosol and possibly alpha-tocopherol.
The phenols are related to astringent attributes. It is probably the
combination of bitterness and astringency that causes the cough.
Paul asks: I have
been using Extra Light Olive oil, but I wonder if the polyphenols Olive Oil
News responds:
Polyphenols are very small chemicals so they cannot be filtered out of an
oil. Lai asks: I
understand olive oil is able to withstand moderate heat before free
radicals are formed. Your web site mentions about smoking point and
boiling point of olive oil. I would like to know if the smoking point is
the temperature at which free radicals start to form? Olive Oil
News responds: As with
most chemical reactions, free radical formation can occur at any
temperature (even when refrigerated) but is greatly accelerated as the
temperature goes up and the longer it stays there. There is no set
threshold. Jennifer asks:
I was recently in Tuscany and took the attached picture of an olive tree.
Could you please tell me if each of the tiny green bulbs shown in the
picture will become an olive? How many olives would you expect an average tree to
produce in one season? Olive Oil
News responds: Each of
the blossoms has the potential to become a fruit. Whether or not they do
so is dependent on pollination, weather, water, other stresses on the
tree and even variety. Olive growers who
want oil generally encourage all the olives to develop. For those growing
olives for canning, removing many of the small olives using an abscission
agent will leave a few large olives which get a higher price per pound.
"Fruit set" is a complicated subject:
See
also Alternate bearing As for the total
number of olives a tree can produce, unfortunately there is no
"average tree". Some varieties produce huge quantities on trees the
size of a bush while others are dry farmed into impressively tall trees
but produce few olives. The size of the olive also varies from less than
2 grams to greater than 6. To complicate more, there is also no "average
season" as olive trees usually bear more heavily in alternate years. University of
California experts figured 80 lbs per tree yield for their business cost
analyses based on older mission trees. Hedgerow high yield trees
yield 15 to 25 pounds per tree (but the highest yield per acre - up to 6
tons - because of the number of trees). Large old Mission trees
have been known to yield up to 500 pounds each. According to the
World Catalogue of Olive Varieties published by the International
Olive Oil Council, a medium olive weighs between 2-4 grams. Taking an
average of 3 grams, the hedgerow "bushes" would yield 3,000 olives.
The big mission tree might have 75,000 olives. Events ----- 2005 ----- August McEvoy Ranch Organic Extra Virgin Olive Oil Tour
Saturday August 13,27 tel 707-778-2307
Paso Robles Olive Festival -
Saturday
August 27, 2005 10am - 5pm
MOPREP (Mission Olive Preservation, Restoration, and Education
Project) will be at the
August 27 Paso Robles Olive Festival
providing information about the organization and selling heritage
trees, oil, and olive wood implements September The 44th Annual Meeting of the Japan Oil Chemists’
Society ” Sep. 14-16, 2005
Yokohama, Japan
LINK McEvoy Ranch Organic Extra Virgin Olive Oil Tour
Saturday Sept
17 tel 707-778-2307 15th IFOAM World Congress
20-23rd September 2005 Adelaide 26th World Congress and Exhibition of the
International Society for Fat Research - ISF October Mission San Jose Chamber of Commerce 5th Annual Olive
Festival Saturday, October 1, 2005 43600
Mission Blvd., Fremont CA contact voice mail 510-873-7701 10 a.m. - 5
p.m. McEvoy Ranch Organic Extra Virgin Olive Oil Tour
Saturday October 1 tel 707-778-2307 8th Annual Cańada College Arts & Olive Festival
Sunday, October 2nd 2005 for information
call: Julie Mooney olivefest@smccd.net,
650-306-3428 or go to www.olivefest.org 4th annual Cape Olive Fair
October 1, 2 South Africa, A delightful
combination of olive oil, olives, wine, Mediterranean food, and
festivity, await visitors to SA’s largest gathering of olive producers at
the 4th annual Cape Olive Fair. This Old World food market will take
place at Bishops College. Dedicated to the delights of the olive fruit
and fresh produce, the venue is in keeping with the tradition of hosting
the event within the Cape Town area, in settings offering Old World
ambience and pleasant outdoors surroundings. China International Olive Oil and Edible Oil
Exhibition October 10, 2005 in
China International Exhibition Center of Beijing Ms. Zhu Xiubin Tel:
+8610 67104602 Fax: 010-51162961 67104603 Australian Olive Expo October
26th & 27th, 2005 Canberra
www.australianoliveexpo.com November Eurolipids International Trade Fair for Fats & Oils and related
Technologies, 2-4 November 2005,
Frankfurt, Germany: Companies, producers and suppliers of:
Vegetable and Animal Oils and Fats, Processing Machinery – technology and
techniques, Fat and Oil Derivatives for the Food industry, Feedstuff
industry, Oleo Chemistry Olive Oil Class at Cakebread Cellars
November 5. Help harvest the 2005 crop. Marvin Martin, olive
oil expert and consultant will provide the tools to harvest. Our
resident Chefs will then teach you how to brine and cure as well as cook
with olive oil. EIMA 2005 November 12-16
Bologna, Link California Farm Conference November
13-15, 2005 Marriott Hotel Ventura, CA
The California Farm Conference serves to protect, support, and increase
the economic viability of the state's small-scale farmers
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April 06, 2008
The Olive Oil Source. All rights reserved. |
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