Author Archives: Hortalaska Berries

Taste testing Finnish Honey

This is an interesting research paper from the University of Turku, Finland, the Finnish Beekeepers Association and the Tallin University, Estonia. The researchers conducted sensory taste testing and completed chemical profiles of several Finnish honeys (buckwheat, cloudberry, lingonberry, white sweet clover, willow herb (fireweed) and mixed flower honeys (composed of flowering mustards, clover and raspberry, and a member of the genus, Vaccinium). They found a total of 73 compounds that contribute to the aroma of the honeys. They also tested flavor, smell, color and texture with a panel of 62 people. Buckwheat honey was described as malty with a cheese- and fecal-like and cow- and barn-like aroma. Some called it “earthy”! They found that cloudberry honey had the highest level of aromatic compounds of those tested. It was described as pungent, solvent-like, herbal and citrus-like. Lingonberry honey was described as pleasant and sweet with notes of vanilla and caramel. The others were rated well because they were most familiar to the panelists and their pleasant aromas. The honey samples that rated poorly because of strong, unfamiliar odor, flavor and aftertaste as well as dark color were buckwheat and cloudberry! Both were strongly negative in consumer appeal.

I have eaten buckwheat honey, and it is as strong and “earthy” as described, more like a molasses rather than honey, but still good especially for baking. To lump cloudberry in the category is amazing! I have never seen a beekeeper sell cloudberry honey – not enough flowers in one location, I suspect, but it doesn’t sound like anything I would invest in! Lingonberries and fireweed – yes!

Kortesniemi, M., Rosenvald, S., Laaksonen, O., Vanag, A., Ollikka, T., Vene, K., Yang, B., Sensory and chemical profiles of Finnish honeys of different botanical origins and consumer preferences, Food Chemistry (2017), doi: Honey article

 

Thaw-degree days in Fairbanks

For a garden club presentation I gave this past spring, I graphed the weather records from the Fairbanks Experiment Farm to look at changes over time. The biggest one goes back to 1948 and is for thaw degree days. This chart is a broad indicator of the warmth of the season. Average daily air temperature records are subtracted from a baseline temp of 32F. This assumes that plant growth occurs at any temp above 32F but not below. This is not quite accurate because cell sap does not freeze at exactly 32F, and there are Alaska native plants that can grow at temps that are a few degrees below 32F. On the other end of the spectrum, garden plants have all kinds of lower limits to growth- cool season crops are often around 40 – 45F below which growth stops. Warm season crops are more like 50F and above. However, choosing 32F at least allows a comparison of the seasons. The thaw degree- day (TDD) chart is split into three just to fit it onto a page. Check out the differences among years and the mean TDD on each chart. The timeline is waaaay too short to make conclusions on climate change, but it is interesting to see the incredible variation from year to year.      1948 – 2016 Thaw degree days

More anti microbial activity in lingonberries

This study explored the antimicrobial activity of the antioxidant phenolic compounds in lingonberry juice and two other fruits in spoiled fruit juice. They studied Asaia lannensis and  Asaia bogorensis, two well known bacteria that are a significant contributor to the degradation of non-alcoholic fruit juices. These bacteria create biofilms  that cause turbidity and adhesion of the juice on surfaces holding the juice. These biofilms, in turn, can cause illness in susceptible individuals. The bacteria are also becoming resistant to a lot of the chemical preservatives used now in juices. The authors found that lingonberry juice added to the product shows a 67% reduction in adhesions from the bacteria. We all knew lingonberries were great. The evidence keeps mounting!

Wild Fruits as Antiadhesive Agents Against the Beverage-Spoiling Bacteria Asaia spp.

Hubert Antolak,  Agata Czyzowska  , Marijana Saka , Aleksandra Mišan , Olivera  uragi´c and Dorotea Kregiel Institute of Fermentation Technology and Microbiology, Lodz University of Technology, Wolczanska 171/173, 90-924 Lodz, Poland; agata.czyzowska@p.lodz.pl (A.C.); and Institute of Food Technology Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia;

Abstract: The aim of the study was to evaluate antioxidant activity and total phenolic content of juice from three different types of fruits: elderberry (Sambucus nigra), lingonberry (Vaccinium vitis-idaea) and cornelian cherry (Cornus mas), and their action against adhesion of bacterial strains of Asaia lannensis and Asaia bogorensis isolated from spoiled soft drinks. The antioxidant profiles were determined by total antioxidant capacity (2,2-diphenyl-1-picrylhydrazyl, DPPH), and ferric-reducing antioxidant power (FRAP). Additionally, total polyphenol content (TPC) was investigated. Chemical compositions of juices were tested using the chromatographic techniques: high-performance liquid chromatography (HPLC) and liquid chromatography–mass spectrometry (LC-MS). Adhesion properties of Asaia spp. cells to various abiotic materials were evaluated by luminometry, plate count and fluorescence microscopy. Antioxidant activity of fruit juices expressed as inhibitory concentration (IC50) ranged from 0.042 0.001 (cornelian cherry) to 0.021 0.001 g/mL (elderberry). TPC ranged from 8.02 0.027 (elderberry) to 2.33 0.013 mg/mL (cornelian cherry). Cyanidin-3-sambubioside-5-glucoside, cyanidin-3-glucoside, and cyanidin-3-sambubioside were detected as the major anthocyanins and caffeic, cinnamic, gallic, protocatechuic, and p-coumaric acids as the major phenolic acids. A significant linear correlation was noted between TPC and antioxidant capacity. In the presence of fruit juices a significant decrease of bacterial adhesion from 74% (elderberry) to 67% (lingonberry) was observed. The high phenolic content indicated that these content indicated that these compounds may contribute to the reduction of Asaia  spp. adhesion.

2017 VVI

Healthy sausages?

I first read the title to this article and wondered if this wasn’t a joke – trying to make sausages healthy by adding sea buckthorn juice. Sounded pretty extraordinary to me. But then I read past the abstract and learned that the researchers are trying to find alternatives to chemical additives to sausages. In other words, they were trying to find a natural alternative to artificial additives to their product. In this case addition of 1.5% sea buckthorn juice increased the shelf life, reduced lipid oxidation and improved the microbial quality of the meat product. Its an interesting look at the complexities of food science.

2017 Hippophae

Anna Marietta Salejda,1 Agnieszka Nawirska-OlszaNska,Urszula Janiewicz,1 and Grahyna Krasnowska Department of Animal Products Technology and Quality Management,Wrocław University of Environmental and Life Sciences,ChełmoÅLnskiego Str., 51-630Wroclaw, Poland and Department of Fruit, Vegetable and Nutraceutical Technology,Wrocław University of Environmental and Life Sciences, ChełmoÅLnskiego Str., 51-630Wroclaw, Poland

 

 

The present study was aimed at evaluating the effect of a sea buckthorn (Hippophae rhamnoides L.) fruit extract on selected quality properties of cooked sausages.The ethanolic extract of sea buckthorn fruit (SBE) incorporated at the highest level (3%) significantly affected the pH, weight losses, and instrumental color parameters of sausages. The SBE deteriorated organoleptic properties of sausages like juiciness, overall appearance, texture, and taste; however the sausagesmanufactured with 1.5% SBE were scored higher for color and almost the same as control for smell acceptance. Textural parameters like hardness, springiness, gumminess, and chewiness of cooked sausages decreased along with SBE addition. After 28 days of storage, the samples with 1.5% SBE addition were as springy, hard, and gummy as the control ones. Incorporation of SBE increased the shelf life of sausages. The highest inhibition of lipid oxidation was observed in the samples manufactured with 1.5% SBE.The SBE significantly improved the microbial qualities of sausages.

Alaska Strawberry History

For anyone interested, here is a short article I wrote a few years ago about the history of strawberry breeding and cultivation in Alaska.      Strawberry history

Strawberry wars

Strawberries have been a passion all over the world for hundreds of years. The story is no different in Alaska where strawberry mania traveled North with the Gold Rush. The attached link is an interesting history of the development of the strawberry with one of the world’s top producers, Driscoll as well as conflicts with public and private breeding interests. It evens mentions Alaska wild strawberries! Driscoll Strawberries conducted some research along with the UAF Georgeson Botanical Garden into strawberry plant production in the 1990s. They were interested in learning if producing the plants at high latitudes would improve yields when the plants were transplanted in southern California and Mexico for fruit production. The results were not positive so they moved on to other ideas. It was interesting working with this private company and learning their research procedures that have since catapulted their patented strawberries into world fame. Anyone who buys strawberries at Safeway or Freddies certainly knows their name. It is also interesting to note that Alaska had the first strawberry breeding program at a U.S. University anywhere! It was begun by Charles Georgeson in the early 1900s. Others certainly have lasted longer, but Alaska was the first! We just can’t seem to get anyone in the State to fund ag research on any level. The Agricultural Experiment Station was THE research and development arm for Alaska farmers, and today it is a shadow of its former self.

The Driscoll Story

 

Nitrogen fertilizers in boreal forests and their effects on plants and animals

Gardeners often apply extra fertilizer to their wild berry patches to increase yields in wild stands. This paper summarizes research on the effects of applying nitrogen fertilizer on large and small animals as well as plants. It is an interesting survey of forest systems and not just the wild berry we have in mind.

Influence of nitrogen fertilization on abundance and diversity of plants and animals in temperate and boreal forests

Thomas P. Sullivan, Druscilla Sullivan

Published on the web 26 July 2017.


Environmental Reviews, https://doi.org/10.1139/er-2017-0026

ABSTRACT

Aerial and land-based applications of nitrogen-based fertilizers to enhance forest growth makes nutrients potentially available to all trees, plants, and wildlife in a given ecosystem, and therefore may have direct and indirect effects on wildlife and biodiversity. A scientific review of these potential effects was conducted with 106 published studies covering vascular and non-vascular plants, amphibians, birds, mammals, terrestrial invertebrates, and soil animals associated with fertilization in temperate and boreal forests, primarily in North America and Scandinavia. In terms of direct effects, amphibians and domestic mammals appear to be the most sensitive to urea used in fertilization programs. The avoidance behaviour and/or mortality of amphibians in laboratory studies was species-dependent. Ruminant animals, including wild ungulates, rapidly convert urea to ammonia and are susceptible to toxicity following ingestion of large amounts of urea. Feeding on urea pellets by small mammals or gallinaceous birds appears to be minimal as granules are unpalatable. In terms of indirect effects, the majority of responses of understory herbs to nitrogen fertilization showed an increase in abundance. Some shrubs in repeatedly fertilized stands eventually increased in abundance in long-term studies, whereas dwarf shrubs and abundance of bryophytes (mosses and terrestrial lichens) declined. In general, species richness and diversity of understory herbs and shrubs declined, or were unaffected, in fertilized stands. Response in abundance and species richness-diversity of vascular plants to a single application of nitrogen showed either an increase or no change. Repeated applications (2-5 and > 5) usually resulted in declines in these responses. Relative abundance of mule deer (Odocoileus Rafinesque spp.), moose (Alces alces L.), and hares (Lepus L. spp.), and forage quantity and quality were usually increased by fertilization. Small mammal species generally showed increases or no change in abundance; decreases may be related to fertilizer-induced changes in food sources. Forest fertilization may provide winter feeding habitat for coniferous foliage-gleaning insectivorous birds in some cases. Six species of forest grouse showed no response to fertilizer treatments. Responses of soil animals to nitrogen fertilization appeared to be species- and dose-specific and ameliorated by surrounding micro- and macro-habitat characteristics.

Origin of the Svalbard Seed Bank

Here is a link to an interview with Cary Fowler and Terry Gros about how the global seed vault originated. The interview is a very interesting history.

https://www.npr.org/player/embed/539005688/539059394“>NPR- Global Seed Vault

Juniperus horizontalis — Yukon Wild Berries

Yes! a few days ago, the male flowers released their pollen and yesterday i finally found, on a different plant (dioecious) a few female flowers with a last year berry ( which is not a true berry) and a two year old ripe, blue, berry on the same branch.April 29, 2017Along the Takhini river, on…

via Juniperus horizontalis — Yukon Wild Berries

Geocaulon lividum — Yukon Wild Berries

the false toadflax is blooming, May 16 2017.This one found at teapot ponds, but it is very common around here, and i saw it coming into bloom the last few days.I call it timberberry,but it’s prettiest name is northern comandra comandra meaning hairy calyx lobes

via Geocaulon lividum — Yukon Wild Berries

Alaska Bumble Bees

This is a summary of Rehanon Pampel’s thesis documenting bumble bees in agricultural areas of the Interior. It documents species as well as seasonal occurrence. You think bumbles are doing their thing all summer, but there is a definite seasonal pattern to their work.

biodiversity_data_journal-3-e5085

Documenting Change in Nunavut

Here is a thesis that explores climate change through berries near Kugluktuk, Nunavut, Canada. The program is part citizen science as well as documenting the ethnobotany of the region. It includes great summaries of the most important berries and even some recipes!

ubc_2017_may_desrosiers_sarah

Improving Haskap Fruit Quality

This thesis reveals an interesting breeding program at the U. of Saskatchewan to improve the quality of Haskap berries and leaves. Their goal is to increase secondary metabolites or compounds that might be beneficial to human health.

DAWSON-DISSERTATION-2017

How to improve cloudberry fields

Nice research about increasing abundance of cloudberry plants by increasing fertilizers. Here is the abstract. The full article is available from the Canadian Journal of Plant Science.

Rubus chamaemorus rhizome development

 

 

Sheperdia canadensis — Yukon Wild Berries

female flowers, and indeed on the soapberry bush by the poplar where the swing used to be.male flowersfemale soapberry bushmale soapberry bushMay 21 2017, in the yard

via Sheperdia canadensis — Yukon Wild Berries

Antimicrobial Activity in Lingonberry

This study from Romania/Hungary showed that lingonberries have a high anti-microbial activity especially relating to Pseudomonas species. The authors found that where you harvest makes a big difference in this anti-microbial activity. When selecting for high activity, the location needs to be considered. It is not known just what in the environment is influencing the activity, but it can be highly variable.

2017 Laslo

Flavonoids in Crowberry, Empetrum nigrum

This is an interesting article on the value of crowberries in the diet. Lots of people harvest this fruit although many people consider it tasteless, nothing more than a thirst quencher if you are out hiking in the woods. They are tiny, and you have your work cut out for you to harvest enough to do anything with, but they are good.

Empetrum nigrum

Black Crowberry (Empetrum nigrum L.) Flavonoids and Their Health Promoting ActivityTunde Jurikova 1, *, Jiri Mlcek 2 , Sona Skrovankova 2 , Stefan Balla 1 , Jiri Sochor 3 , Mojmir Baron 3 and Daniela Sumczynski 2 1 Institute for Teacher Training, Faculty of Central European Studies, Constantine the Philosopher University in Nitra, Drazovska 4, SK-949 74 Nitra, Slovakia; sballa@ukf.sk 2 Department of Food Analysis and Chemistry, Faculty of Technology, Tomas Bata University in Zlin, nam. T. G. Masaryka 5555, CZ-760 01 Zlin, Czech Republic; mlcek@ft.utb.cz (J.M.); skrovankova@ft.utb.cz (S.S.); sumczynski@ft.utb.cz (D.S.) 3 Department of Viticulture and Enology, Faculty of Horticulture, Mendel University in Brno, Valticka 337, CZ-691 44 Lednice, Czech Republic; sochor.jirik@seznam.cz (J.S.); MojmirBaron@seznam.cz (M.B.)  Published: 7 December 2016

Abstract: Nowadays, much research attention is focused on underutilized berry crops due to the high antioxidant activity of fruits. Black crowberry (Empetrum nigrum L.) represents an important source of flavonols (quercetin, rutin, myricetin, naringenin, naringin, morin, and kaempferol) and anthocyanins. The fruit components could be utilised as natural colourants or as a part of functional foods and, because of the high antioxidant activity, the berries of black crowberry can be used in the treatment of diseases accompanied with inflammation, or as an effective antibacterial and antifungal remedy. Moreover, the reduction of lipid accumulation and total cholesterol as well as an improvement of postprandial hyperglycaemia have been proven. This review summarizes for the first time the main antioxidants (flavonoids) of black crowberry fruits, with a focus on their health promoting activity.

Roadside fertilizer?

Several Alaska researchers studied the vegetation along the Dalton Highway in moist-acidic tussock-tundra in 2006. The pH of the roadside that is annually covered in fine dust from the road, increased over time from 4 to 6. . The amount of grasses did, too as well as cloudberry, Rubus chamaemorus. The fine dust may be adding a bit of fertilizer to the roadsides. It is not surprising that grasses increase especially on disturbed sites, but cloudberries are a surprise. I wonder if berry yield also increases or if it is just vegetation.

Roadside vegetation

A great cottage business in Ketchikan

Here is a nice news article about a jam and jelly business in Ketchikan.

Ketchikan Jelly and Jam

 

Northern high bush and half high blueberries in Kenai

Researchers Drs. Danny Barney and Kim Hummer conducted variety trials on on-native Alaska blueberries in cooperation with Alaska Berries of Kenai. It has been difficult to find any non-native blueberry that is consistently hardy in Alaska to make it worth growing commercially. Their abstract is below. The full article is available at the Journal of the American Pomological Society 66(3):145-152. 2012. Research at UAF also conducted hardiness trials of these cultivars in Fairbanks. In fact, many species and cultivars have been tested over the years since Gold Rush Days. None survived above the snow line. You can get a handful of berries on the stems protected y snow, but all branches were killed above the snow line. It does hint that heavy mulching or microclimate manipulation might improve survival, but when our wild  blueberries are so abundant and delicious, why bother?

Abstract: Home and commercial cultivation of small fruits is popular in Alaska and blueberries of several species, such as V. corymbosum and V. angustifolium, have potential as cultivated crops for local production. In June 2009, we established blueberry plantings in two locations on the Kenai Peninsula, approximately 106 kilometers southwest of Anchorage, Alaska. Our objectives were to compare effects of location and cultivar for three northern highbush (Vaccinium corymbosum L.) and six half-high (V. corymbosum Å~ V. angustifolium) blueberry cultivars on plant survival, fall tip dieback, winter injury, yield and fruit weight. Severe winter injury and some mortality were observed by June 2011. At both locations, highbush cultivars ‘Duke’, ‘Earliblue’, and ‘Patriot’, and the half-high cultivars ‘Chippewa’ and ‘Northland’ had severe fall tip dieback and winter injury. These five cultivars are not recommended for Southcentral Alaska, although ‘Patriot’ produced a few large ripe fruit in 2011. The remaining half-high cultivars survived well and produced yields in 2011. ‘Northblue’ and ‘Northsky’ ripened first, followed by ‘Northcountry’ and ‘Polaris’. Fruit was harvested three times in September 2011. ‘Northblue’ yield was 0.25 kg·plant-1 (2-years post-establishment) and mean berry size was 1.98 g·berry-1. Yields for ‘Northcountry’, ‘Northsky’, ‘Polaris’, and ‘Patriot’ were 0.09, 0.18, 0.05, and 0.02 kg·plant-1, respectively. Berry weights were 0.66, 0.88, and 1.50 g·berry-1 for ‘Northcountry’, ‘Northsky’, and Polaris’, respectively. Berry weights were not determined for ‘Patriot’. Based on our initial observations, given appropriate cultivar selection and plant management, half-high blueberry production on the Kenai Peninsula appears feasible for home and small-acreages. Snow-catch strategies for winter protection and tunnels for season extension are recommended.